S7 Active - Switch From AT&T - Confirmed Working - Samsung Galaxy S7 Active Guides, News, & Discussio

Just wanted to post this for anyone else that wanted to use their S7 Active with another provider and didn't want to stay with At&t
or wanted to use other sims when traveling.
( I have nothing against At&T, but there was a better option I wanted to use...ie unlimited 4g)
I wanted the S7 active but also wanted to switch from at&t (for me it was too pricey and again there was no unlimited 4g) so I thought I might be in a bind on options and was holding off on making the switch
(For me the bttery lfe alone made the S7 and S7edge completely inferior to the active and that at first was enticing enough for to me to stay with At&t)
However... I didn't realize how easy At&T themselves made it to switch.
I can confirm the S7 active (SM-G891A) running 7.0 nougat works perfectly on the other network. Not trying to give that network free marketing... but its the other carrier on a GSM network in the US.
Though its pretty straight forward.. I thought I would just state below
Prerequisites
Own your phone outright
Not on contract (or you'll presumably pay a fee)
You are the account owner
Go to this site
https://www.att.com/deviceunlock/#/
Type in your devise IMEI number and info and account email
Request unlock code
Go to your email click the confirmation (Showed up for me in about a minute)
Wait about 10-40 minutes for a second email (It says up to 48 hours but I just did this on three separate devises and they all took less than an hour)
Write down the Code provided
Turn off phone
Remove AT&T sim card and insert other carriers SIM (can be a friends, classmates, coworkers if you don't have one yet)
Turn phone on
(Pop Up generates for unlock code request)
Enter Unlock code
Done!
S7 Active free to go.
Added note:
Once your new carriers SIm comes in and If you want to keep the old number DO NOT CANCEL your line with AT&T, first insert the new SIm from the New carrier and then port your number over...
You'll keep your AT&T number that you had and automatically end your service with them. No fees no hassle as long as you met the prerequisites above.
Hope that Helps for anyone wanting to make the switch

Forgot to add, though it might be obvious I still don't want anyone to get hung up on it... you will have to set your new APN (access point names) per your new provider and or new location. It may auto populate with your new Sim card... BUT it also may be a generic APN with the new provider and not nessicarily the best 4g network.
Just Google or call your new provider and they will provide which APN is best for your S7 active on your network.

*#*#4636#*#* - To change network settings
If you are struggling with default AT&T settings:
Dial *#*#4636#*#* -> 'Device Information' -> 'Set Preferred Network Type:' -> Select 'WCDMA' or 'Global auto (PRL)'
I used to get 1 bar on LTE, now I'm getting full coverage on UMTS. I'm on MINT SIM (they are T-mobile MVNO).

I want to add, after the first week I realized 7.0 had some intermittent 4g issues (some it would say no Internet ever with full bars)
I flashed back to 6.0.1 and all the issues are gone.
Please just keep this in mind if you have issues with s7 active 7.0 off of at&t.

@Acinko thanks for the heads up on 7.0 issues. How were you able to get 7.0 on an unlocked S7 active? It keeps telling me that the firmware is up to date. (Using T-mobile service)

goowacjai said:
@Acinko thanks for the heads up on 7.0 issues. How were you able to get 7.0 on an unlocked S7 active? It keeps telling me that the firmware is up to date. (Using T-mobile service)
Click to expand...
Click to collapse
On t-mobile you probably want to stay on 6.0.1 and not move to 7.0 n... t-mobile is having some data issues when the phone is on 7.0
However if you want to try it anyways... download the full firm file for 7.0 and 6.0.1 (both available on this site, just search recent posts) make sure you get both so you can switch back if need e d.
And your gonna need to flash them with Odin when your phone is in download mode.
There is walkthroughs for this on this site and others so I won't repeat it all here but that is what you will need to do.
No root needed.

Here's the 6.0.1 file, you can down load from these links and use the password to open (which is in the third post)
https://forum.xda-developers.com/s7-active/development/how-downgrade-7-0-to-6-0-1-t3590649

And here's 7.0 n
https://forum.xda-developers.com/s7-active/how-to/g891a-android-n-offical-odin-package-t3581042
Just FYI due to heavy bandwidth usage with these types of files the links regularly break (or really just get taken off) so you may have to search for another upload if these stop working.
Good luck.

Acinko said:
I want to add, after the first week I realized 7.0 had some intermittent 4g issues (some it would say no Internet ever with full bars)
I flashed back to 6.0.1 and all the issues are gone.
Please just keep this in mind if you have issues with s7 active 7.0 off of at&t.
Click to expand...
Click to collapse
This is not "S7 Active" specific issue. It is overall S7 issue on Android 7.0. You don't need to downgrade to 6.0.1. Just delete all the APNs (make it EMPTY!) -> Restart phone -> Add APN -> Restart. Problem solved.

Any particular reason why you would go to T-Mo over ATT? I think ATT's network is better? If its cost than maybe consider Cricket?

ins0mniac said:
This is not "S7 Active" specific issue. It is overall S7 issue on Android 7.0. You don't need to downgrade to 6.0.1. Just delete all the APNs (make it EMPTY!) -> Restart phone -> Add APN -> Restart. Problem solved.
Click to expand...
Click to collapse
I'm not sure about yours, but for sure there was issues with my active on 7.0 off of ATT and wiping / replacing APNS did not fix it. What you said to do was the first step I tried.
Then I moved on to clearing location through the other company and fully resetting networks.
Tired default APNs, tried suggested APNs tried manual and custom APNs all of which still lead to intermittent or no connectivity
It became to have regular intermittent complete loss of network and data, no matter what apn was on there.
Flashing to 6.0.1 fixed it and I never had the issue again. Again maybe it worked differently for others, but that for sure is what fixed my issues.

CFoote said:
Any particular reason why you would go to T-Mo over ATT? I think ATT's network is better? If its cost than maybe consider Cricket?
Click to expand...
Click to collapse
CFoote, I shot you over a pm.

So, I got a S7 active off swappa and it works with my cricket account. However everytime I make or receive a call a small notice a the bottom of the screen says PROVISIONAL FWD ACTIVE comes on. (see screen grabs). Basically if I am on the phone or have the phone down on a table and miss a call. My callers are being sent to this 916 area code in Sacramento which appears to be a general ATT (or old owner?) vmail bank. I have tried and failed to update from ATT instructions (failed to read data). And the 3 ATT reps I am talking to say I have to have the ORIGINAL OWNER turn the function off first! Any helpo or suggestions? Apologies if this really needs its own thread. https://goo.gl/photos/f7UzoQsQfS9sE2Vk9

Reverted to 6.0.1 and still having connectivity issues
Acinko said:
I'm not sure about yours, but for sure there was issues with my active on 7.0 off of ATT and wiping / replacing APNS did not fix it. What you said to do was the first step I tried.
Then I moved on to clearing location through the other company and fully resetting networks.
Tired default APNs, tried suggested APNs tried manual and custom APNs all of which still lead to intermittent or no connectivity
It became to have regular intermittent complete loss of network and data, no matter what apn was on there.
Flashing to 6.0.1 fixed it and I never had the issue again. Again maybe it worked differently for others, but that for sure is what fixed my issues.
Click to expand...
Click to collapse
I think I've tried all the things listed in this thread. I have a SM-G981a (unlocked) device. When I got it (on Nougat), I cleared all APNs and added the one recommended by my provider (mintsim). I had service for about one hour and then lost it and it never came back.
I rolled back to 6.0.1 and cleared the APNs and used the same mintsim recommended APN and still don't have service.
Any ideas of next things to try?
Thanks in advance.

Dial *#*#4636#*#* -> 'Device Information' -> 'Set Preferred Network Type:' -> Select 'WCDMA' or 'Global auto (PRL)'
My phone worked fine in Sweden with default settings, but in Romania I had to type in the above and chose LTE/UMTS auto (PRL) and then it worked perfect!

i have an s7 active that was frp and network unlocked. i am trying to use this on tmobile.
my s7 active is running android 7.0
i have a few problems and need assistance
1. the wifi calling option is greyed out under settings. from the home screen using the pulldown menu the wifi option appears to be turned on.
2. text messaging and emails worked for about one day then quit
3. samsung pay has a message ..access to samsung pay has been denied call customer service
4. s health unable to open app. your device had been compromised
any ideas?
thanks

Would this work for switching s7 to Verizon?
Would this work for Verizon or because it's cdma not gsm it won't work

Related

Nexus 6P: Calling Issues — Cannot Make Calls, but Data/Texting Works (Verizon)

Hello,
I recently upgraded my Huawei Nexus 6P to 6.0.1 (dirty-flash, sideloaded).
I had trouble getting LTE to work at first (turning on/off Airplane Mode makes LTE work). I kept trying to change Field Test settings to make LTE work.
However, when I factory reset it the phone won't make or receive phone calls.
It sticks on "dialing..." and it just won't work. However, data and messaging work just fine.
I forgot to back up my EFS partition so it's partially my fault.
My IMEI number and MEID show correctly, however on the My Verizon website it shows a different MEID that's nothing close to the original one. The last 2 digits were different. Neither the MEID or IMEI were changed during the upgrade process, so it should have worked fine.
I recently called Verizon Tech Support about this and they said they'd change the MEID within 72 hours to 4 days. (I called Friday evening)
They kept having issues with the server rejecting the MEID and I checked, it's not blacklisted. They told me about a "wrong form" being filled out and ran some tests and nothing worked.
The phone MEID and Field Test menus showed properly though, just calling any other number (even Verizon's activation number) won't work.
I kept factory resetting, even downgraded to 6.0 (clean flash with recovery/radios, unrooting and all that), and LTE worked better, but STILL no phone calls!
Whenever I try to activate it on the website, it keeps telling me to contact their number. I'm not sure if I'll need a new SIM card because I've tried another SIM card and will also not make calls.
I'm not sure if calling has to do with the MEID or IMEI or anything else.
Do you have any tips/suggestions to fix this annoying issue?
Thank you,
Exec360
I've seen the issue going from Wireless to LTE and vice versa but I have no issue making or receiving calls. Texting and MMS work ok also. I went from 6.0 to 6.1 by doing a factory image flash. Now I'm Chroma and I'm curious if I would have this same issue on Stock so I will probably flash factory or a slim rom stock tonight. I'm on Verizon and had a nexus 6, I popped the sim in my 6p and it activated with no issue.
rsalas187 said:
I'm on Verizon and had a nexus 6, I popped the sim in my 6p and it activated with no issue.
Click to expand...
Click to collapse
Same here, except I popped out the SIM from my iPhone 5S.
Ironically, when I put the same SIM back into the 5S, calling and voicemail, in addition to data worked, even though the device was recently deactivated from Verizon.
I'd say the issue probably comes up from a corrupted IMEI/MEID or other identifier. (Not completely sure about this though — the IMEI/MEID was the same between popping in the SIM for the first time and after resetting...)
Verizon detected my device as a Huawei 1511 phone and thinks it's an old Samsung feature phone when I run it through support/help pages.
I have the exact same problem with my phone and I don't know what to do.
update: I just flashed the efs backup file and it worked again.
I forgot to back up my EFS partition and I had 2 chances to do so...
My IMEI, MEID and SIM ID show perfectly in the About section, even when factory reset and bootloader locked, but calls still don't work, very odd.
I used Wugfresh and just about every IMEI recovery tool I could find (EFS Professional) but it keeps giving me errors such as "Access Denied..." with BusyBox installed.
Still no email or response from Verizon techs tonight, expecting one tomorrow.
If not, I'll have to RMA.
More specifically, I cannot find an EFS folder or a nv_data.bin file in any file explorer — Root Explorer, Solid Explorer, TWRP, etc.
Alright, I've actually figured out that the problem is NOT the EFS after I sent it in to Verizon.
My IMEI and MEID number and everything else were actually just fine.
It wasn't flashing or anything that ruined my phone... I recently called Verizon one night on my phone about LTE issues on 6.0.1 and after that, the calls just stopped.
In fact, the problem IS on their end.
They gave me a new SIM card and it didn't work. They realized the phone was new on the network and that would cause incompatibility issues.
Now I have to ship my phone to their IT department which takes about 2 weeks.
If that is your case:
Verizon guide to getting your calling back:
First, I'd try flashing an old EFS backup when your phone was working. If that doesn't work, call their support number (1-800-922-0204) and select the tech support option or say it if it asks.
Give them your SIM card number to try activating the phone. If that doesn't work, you can still send in your phone — just ask them and a phone kit will ship.
Sending it in to the IT department will take around 1-2 weeks, so you should definitely have a backup phone or communication device on hand (you can also just use Google Voice from a PC which is a great temporary solution).
I'll say, BIG props to Verizon for giving us very good support.
Exec360 said:
Alright, I've actually figured out that the problem is NOT the EFS after I sent it in to Verizon.
My IMEI and MEID number and everything else were actually just fine.
It wasn't flashing or anything that ruined my phone... I recently called Verizon one night on my phone about LTE issues on 6.0.1 and after that, the calls just stopped.
In fact, the problem IS on their end.
They gave me a new SIM card and it didn't work. They realized the phone was new on the network and that would cause incompatibility issues.
Now I have to ship my phone to their IT department which takes about 2 weeks.
If that is your case:
Verizon guide to getting your calling back:
First, I'd try flashing an old EFS backup when your phone was working. If that doesn't work, call their support number (1-800-922-0204) and select the tech support option or say it if it asks.
Give them your SIM card number to try activating the phone. If that doesn't work, you can still send in your phone — just ask them and a phone kit will ship.
Sending it in to the IT department will take around 1-2 weeks, so you should definitely have a backup phone or communication device on hand (you can also just use Google Voice from a PC which is a great temporary solution).
I'll say, BIG props to Verizon for giving us very good support.
Click to expand...
Click to collapse
AN easier method is to use any Verizon phone with a microSIM and activate on their network.
Once the SIM is active, cut it down to a nanoSIM and put it into the Nexus 6P.
It just works. All this about sending your new phone to them for two weeks is crazy.
I pulled the SIM from my LG G3 and cut it. Up and running in minutes.
tech_head said:
AN easier method is to use any Verizon phone with a microSIM and activate on their network.
Once the SIM is active, cut it down to a nanoSIM and put it into the Nexus 6P.
It just works. All this about sending your new phone to them for two weeks is crazy.
I pulled the SIM from my LG G3 and cut it. Up and running in minutes.
Click to expand...
Click to collapse
Unfortunately, my other phone does not have a microSIM. NanoSIMs usually work with LTE connections.
Trimming a microSIM is dangerous and could actually damage your SIM card tray and your phone.
Thank you for the advice, but I should warn you taking that risk may actually damage or cause issues with the SIM card itself such as not being able to read its SIM card number.
EDIT:
After 5 days, 3 factory resets, and many flashes of the older radio, it has been SOLVED!!!!!
First, try disabling, reinstalling the factory version of Google Connectivity Services, then updating it in the Google Play Store.
Next, dial *#*#4636#*#* on your phone application to get to field test mode. This function will work no matter whether the phone is working or not — it's just an information screen.
Click the 3 dots and select "change radio band". Select Radio Band 6, NOT USA or Radio Band 7 — Verizon told me to try both of those and they are glitchy.
Source: "Attaching 2 screenshots. One with band 6 where calling works but data is 1x. Another with USA band where LTE data works but no calling. Looking closely it's set to emergency calls only." (http://forum.xda-developers.com/showpost.php?p=64149076&postcount=8)
Now my GSM service is working and calls work extremely well!
Glad it had nothing to do with EFS/IMEI numbers after all.
Make sure to set your APN to "VZWINTERNET" if it hasn't been set already.
I'm glad I can share this with XDADevelopers so that they can benefit from this information.
- Exec360
Exec360 said:
EDIT:
After 5 days, 3 factory resets, and many flashes of the older radio, it has been SOLVED!!!!!
First, try disabling, reinstalling the factory version of Google Connectivity Services, then updating it in the Google Play Store.
Next, dial *#*#4636#*#* on your phone application to get to field test mode. This function will work no matter whether the phone is working or not — it's just an information screen.
Click the 3 dots and select "change radio band". Select Radio Band 6, NOT USA or Radio Band 7 — Verizon told me to try both of those and they are glitchy.
Source: "Attaching 2 screenshots. One with band 6 where calling works but data is 1x. Another with USA band where LTE data works but no calling. Looking closely it's set to emergency calls only." (http://forum.xda-developers.com/showpost.php?p=64149076&postcount=8)
Now my GSM service is working and calls work extremely well!
Glad it had nothing to do with EFS/IMEI numbers after all.
Make sure to set your APN to "VZWINTERNET" if it hasn't been set already.
I'm glad I can share this with XDADevelopers so that they can benefit from this information.
- Exec360
Click to expand...
Click to collapse
I have the same issue with model h1511 and i bought the phone from Ebay but im living in Qatar .. i dunno what to do .. LTE data connection working fine .. sending and receiving sms is working ok .. only I can't make or receive calls. i'm not sure to whom I should report this issue
Exec360 said:
EDIT:
After 5 days, 3 factory resets, and many flashes of the older radio, it has been SOLVED!!!!!
First, try disabling, reinstalling the factory version of Google Connectivity Services, then updating it in the Google Play Store.
Next, dial *#*#4636#*#* on your phone application to get to field test mode. This function will work no matter whether the phone is working or not — it's just an information screen.
Click the 3 dots and select "change radio band". Select Radio Band 6, NOT USA or Radio Band 7 — Verizon told me to try both of those and they are glitchy.
Source: "Attaching 2 screenshots. One with band 6 where calling works but data is 1x. Another with USA band where LTE data works but no calling. Looking closely it's set to emergency calls only." (http://forum.xda-developers.com/showpost.php?p=64149076&postcount=8)
Now my GSM service is working and calls work extremely well!
Glad it had nothing to do with EFS/IMEI numbers after all.
Make sure to set your APN to "VZWINTERNET" if it hasn't been set already.
I'm glad I can share this with XDADevelopers so that they can benefit from this information.
- Exec360
Click to expand...
Click to collapse
Where was this thread yesterday when I needed it...lol I was messing with my radios and screwed my phone up. Please not this method may not work on a custom ROM I had to flash back to 6.0.0.
Exec360 said:
EDIT:
After 5 days, 3 factory resets, and many flashes of the older radio, it has been SOLVED!!!!!
First, try disabling, reinstalling the factory version of Google Connectivity Services, then updating it in the Google Play Store.
Next, dial *#*#4636#*#* on your phone application to get to field test mode. This function will work no matter whether the phone is working or not — it's just an information screen.
Click the 3 dots and select "change radio band". Select Radio Band 6, NOT USA or Radio Band 7 — Verizon told me to try both of those and they are glitchy.
Source: "Attaching 2 screenshots. One with band 6 where calling works but data is 1x. Another with USA band where LTE data works but no calling. Looking closely it's set to emergency calls only." (http://forum.xda-developers.com/showpost.php?p=64149076&postcount=8)
Now my GSM service is working and calls work extremely well!
Glad it had nothing to do with EFS/IMEI numbers after all.
Make sure to set your APN to "VZWINTERNET" if it hasn't been set already.
I'm glad I can share this with XDADevelopers so that they can benefit from this information.
- Exec360
Click to expand...
Click to collapse
I have the same issue but I live in Qatar. the thing is that my phone has the exact same issue urs. im glad you could solve it. Can you help me solve mine ??
mohawahba said:
I have the same issue but I live in Qatar. the thing is that my phone has the exact same issue urs. im glad you could solve it. Can you help me solve mine ??
Click to expand...
Click to collapse
In the US, all carriers are supported for Nexus 6P use. Since you live in Qatar, you may have a different carrier.
Here are a few other points or solutions for this issue:
If your carrier is not Verizon, does your carrier whitelist the Nexus 6P or only phones sold through them?
Do you get an IMEI number in the Settings application? (don't put it here for privacy reasons) If you don't, then your issue most likely has to do with accidentally deleting or modifying the EFS partition. Try restoring an EFS backup. ALWAYS back up your EFS before you install something else or root your phone — and keep it in a safe location! Alas, that was not the case for me.
Have you tried turning Roaming on inside your cellular network settings or have a specific roaming plan?
Do you get decent reception when making calls in Qatar? Where do you have this issue most, indoors or outdoors? You should get 1x at least.
Try the field test mode (*#*#4636#*#*) in the phone application. Go to "phone info".
If you see "GSM service: emergency calls only" on Verizon, the GSM band is not connected which makes phone calls. Switch to Band 6.
Otherwise, if you see the same thing for GPRS, try switching to another band. I'm not familiar with carriers except Verizon or other US carriers (AT&T, T-mobile, etc.)
I've emphasized this a lot, but try a factory reset. Lock the bootloader and remove your custom mods to the system. It may just work for you.
The case may be that the phone service does not work in Qatar, your reception is weak, or you have a specific phone plan. It may be your carrier not being compatible with certain bands, like GSM.
If that is the case, try calling their support and ask them for any possible solutions to the problem.
EDIT:
You also stated that you bought your 6P from Ebay. Many risks can come from buying used phones off of there rather than the official websites. It's likely that someone messed with the EFS and IMEI numbers.
It could be a stolen phone too... in those cases, it would be illegal (in some countries, not sure if in Qatar) to change the IMEI number unless you have an EFS backup. Sorry, you may just be out of luck. Try another solution like Google Voice or Skype (paid) for now until you get it fixed.
Thx bro
---------- Post added at 01:13 AM ---------- Previous post was at 01:10 AM ----------
Exec360 said:
In the US, all carriers are supported for Nexus 6P use. Since you live in Qatar, you may have a different carrier.
Here are a few other points or solutions for this issue:
If your carrier is not Verizon, does your carrier whitelist the Nexus 6P or only phones sold through them?
Do you get an IMEI number in the Settings application? (don't put it here for privacy reasons) If you don't, then your issue most likely has to do with accidentally deleting or modifying the EFS partition. Try restoring an EFS backup. ALWAYS back up your EFS before you install something else or root your phone — and keep it in a safe location! Alas, that was not the case for me.
Have you tried turning Roaming on inside your cellular network settings or have a specific roaming plan?
Do you get decent reception when making calls in Qatar? Where do you have this issue most, indoors or outdoors? You should get 1x at least.
Try the field test mode (*#*#4636#*#*) in the phone application. Go to "phone info".
If you see "GSM service: emergency calls only" on Verizon, the GSM band is not connected which makes phone calls. Switch to Band 6.
Otherwise, if you see the same thing for GPRS, try switching to another band. I'm not familiar with carriers except Verizon or other US carriers (AT&T, T-mobile, etc.)
I've emphasized this a lot, but try a factory reset. Lock the bootloader and remove your custom mods to the system. It may just work for you.
The case may be that the phone service does not work in Qatar, your reception is weak, or you have a specific phone plan. It may be your carrier not being compatible with certain bands, like GSM.
If that is the case, try calling their support and ask them for any possible solutions to the problem.
EDIT:
You also stated that you bought your 6P from Ebay. Many risks can come from buying used phones off of there rather than the official websites. It's likely that someone messed with the EFS and IMEI numbers.
It could be a stolen phone too... in those cases, it would be illegal (in some countries, not sure if in Qatar) to change the IMEI number unless you have an EFS backup. Sorry, you may just be out of luck. Try another solution like Google Voice or Skype (paid) for now until you get it fixed.
Click to expand...
Click to collapse
Here in qatar, i have one friend having the same fone from amazon and it is working fine. Here no CDMA plus texting and data are working. If the efs is corrupt or as u say screwed, it would work data and text? Band USA and 6 re ok with data and text.. Band 7 dead.
In general, it may corrupt the phone function but texts/data may work fine.
Most carrier connectivity issues usually come up from a corrupt EFS or the service not being activated on your plan.
http://forums.androidcentral.com/ask-question/423732-understanding-cwm-backups-efs-partition-etc.html
For you, it seems like Band 6 is the correct one. No CDMA — and GSM is working again. Good job
Another method to try:
Update the Preferred Roaming List (PRL) - dial *228 on the phone app or figure out your carrier's PRL update number
That might work, didn't affect my calls since I don't use roaming services.
By "Band 7 dead", do you mean that the service just won't connect? My issue came from messing with the bands to fix the LTE issue and messing up my phone.
Try to call your carrier's support — try getting a new SIM card or collect information about the Nexus 6P compatibility, if they don't have it on their website.
Was the phone working since you first used it? Have you rooted or done any system-level modifications to it? Also is your carrier Verizon, because I don't think they have strong roaming service in Qatar... I am in the USA right now using Band 6, working fine.
https://community.verizonwireless.com/thread/494218
When you dial, do you get "Dialing..." and just have to wait until it hangs up, or is there static, or a carrier message? Does your friend have the same carrier (Verizon) as you do?
Sorry I'm asking so many questions. I just can't quite identify your issue very well.
Exec360 said:
In general, it may corrupt the phone function but texts/data may work fine.
Most carrier connectivity issues usually come up from a corrupt EFS or the service not being activated on your plan.
http://forums.androidcentral.com/ask-question/423732-understanding-cwm-backups-efs-partition-etc.html
For you, it seems like Band 6 is the correct one. No CDMA — and GSM is working again. Good job
Another method to try:
Update the Preferred Roaming List (PRL) - dial *228 on the phone app or figure out your carrier's PRL update number
That might work, didn't affect my calls since I don't use roaming services.
By "Band 7 dead", do you mean that the service just won't connect? My issue came from messing with the bands to fix the LTE issue and messing up my phone.
Try to call your carrier's support — try getting a new SIM card or collect information about the Nexus 6P compatibility, if they don't have it on their website.
Was the phone working since you first used it? Have you rooted or done any system-level modifications to it? Also is your carrier Verizon, because I don't think they have strong roaming service in Qatar... I am in the USA right now using Band 6, working fine.
https://community.verizonwireless.com/thread/494218
When you dial, do you get "Dialing..." and just have to wait until it hangs up, or is there static, or a carrier message? Does your friend have the same carrier (Verizon) as you do?
Sorry I'm asking so many questions. I just can't quite identify your issue very well.
Click to expand...
Click to collapse
Thanks for exerting all kind of possible solutions . really appreciated ... I ll explain next everything ..
First of all I'm no verizon subscriber .. I just got the phone from ebay shipped to qatar .. that's all international buyer ..
well secondly, the service is activated. here is different than yours in activation process. Plus my sim card is working on all other devices, opo, op2, opx, mi redmi n2, moto g ...
I believe the problem remains in the piece I have now (nexus 6p) because im used to buy phones from the US and they work fine expect some missing LTE bands that does not really interfere with calling service.
If the EFS/IMEI is corrupt, will it register on the network normally? will data and text still work?
Band 7 dead means no text no data and surely no calls ... plus when I chose it, i always get called ended right after i press Dial a number
experience with other bands:
band USA: text and data working fine ... calls: when dialing, it keeps dialing until the network fails and returns again like reconnect (the bars disappear and return again) and when i hang up, it respond quickly and execute the action but on,
Band 6: text ok data ok , calls no .. but when dialing, it keeps dialing normally till it gives me (call ended ) and if I try to hang up after few seconds, it freezes the phone for like 10 seconds till it execute the action of hanging up ...
so the USA band is the most responsive band in terms of hanging up ..
when I dial *#4636 .... , and access phone information to change preferred network, it is usually set to LTE/CDMA/GSM (PRL) >> if i try to change it to LTE/GSM (PRL) because no CDMA here, it usually return to the default after restarting the phone .. it does not really change the network if, for example, I choose GSM only .. I still see LTE on the bar .. moreover, when i try to choose 2g from cellular networks from settings, it does not reflect and I still get LTE working .. weird ..
** in all cases, FYI, I always see the carrier name in the top left corner of the screen.
*228 does not work as Im not verizon .. plus any USSDs are not going through as it gives error "connection problem or invalid MMI code"
when I try to access caller ID, it gives error " network or SIM card error".
I tried to call the carrier but they could not do anything. I'm still expecting a call from their back office team who ( i assume ) has more experience
getting a new sim would not help because I have tried different active sims different numbers and I also tried the second carrier here in Qatar (vodafone) and the problem persist.
the fone never worked since i reached Qatar. It was not rooted. I only unlocked BL and flashed the first factory stock rom (fully including the radio), yet nothing
wait wait please don't lose hope
one friend here is also giving me ideas and solutions to get over my isssue, he suggested i flash chroma rom bcz it has more bands. I will flash it and give a feedback.
I really appreciate your efforts and also his efforts @Soulfly3
pardon me if I wrote too many things and for giving all my trials not in order
Thanks
Thanks everyone for helping me resolve my issue. biggest thanks goes to @@scoobysnack who helped me greatly to get over it.
Installing Chroma ROM solved the issue because basically it was a problem of bands. Chroma had more bands that work in Qatar. and I could return back to stock rom again without any problems ( but don't mess up with bands in phone information )
Thanks @Exec360 for offering me your great support >>>
I told you chroma would solve your problems. it has different bands to select and I figured the "AUS" bands would work.
Any advice for those of us operating on Verizon's extended network? I'm using my device on the Appalachian wireless network (with whom Verizon has a network sharing agreement as part of it's LTE in Rural America program), and I'm constantly getting the roaming indicator, even though I know I'm not roaming. I've never dealt with this on any other device, and I've used 4 different devices encompassing both Windows Phone and Android. If I switch the CDMA roaming indicator to "Home", the roaming indicator disappears and the usual LTE indicator appears, but I'm unable to make voice calls. If I switch the roaming indicator to "Automatic", I can make voice calls but the roaming indicator returns and the device tells me I'm roaming inside the test menu, even though Verizon tells me I'm not incurring roaming charges. If that's true, then the roaming indicator is just an annoyance, but it's there constantly (even when on WiFi) and for me it's a significant annoyance. Is there anything I can do, or is this just something I'm going to have to live with?

Verizon compatibility broken after update?

Hey guys, I just saw a YouTube video that was posted yesterday where the guy shows that after the update he no longer could connect with his Verizon SIM card in the axon 7. Has anybody else run into this? Mine won't be here until Monday but if this is true I'm going to be sorely disappointed. Thanks for your input.
I am on verizon with no additional problems after the update. I am still always roaming, and my signal is the same (more bars but still the same reception). LTE, MMS, SMS, Cdma all work the same.
I'm really glad to hear that. I'm not so sure the guy knew what he was doing either... Lol :silly:
CaptainElwood said:
I am on verizon with no additional problems after the update. I am still always roaming, and my signal is the same (more bars but still the same reception). LTE, MMS, SMS, Cdma all work the same.
Click to expand...
Click to collapse
Quick question for you bud. I currently have the Moto Z-Force, but I want an unlocked phone that I can root and mess around with and unfortunately this phone doesn't have that capability. Would you say this is a great alternative in terms of functionality and specs? Tia
CaptainElwood said:
I am on verizon with no additional problems after the update. I am still always roaming, and my signal is the same (more bars but still the same reception). LTE, MMS, SMS, Cdma all work the same.
Click to expand...
Click to collapse
I second this. No issues on Verizon unlimited plan after update. Always showing roaming also. Mms, sms, calls work as suppose to. All out of the box settings.
Sent from my ZTE A2017U using XDA-Developers mobile app
tolymatev said:
I second this. No issues on Verizon unlimited plan after update. Always showing roaming also. Mms, sms, calls work as suppose to. All out of the box settings.
Sent from my ZTE A2017U using XDA-Developers mobile app
Click to expand...
Click to collapse
I can third it lol no issues here. Mine actually has better signal after update on verizon and sms/mms everything works still no issues anywhere
My VZW situation. Just an FYI post AND how to fix it.
I'm on Verizon, have had my Axon 7 for over a month now. No issues other than not having VoLTE, and the occasional software farts (Using Nova Launcher now). When I initially set-up my phone, I imported all previous apps directly from the Play Store. I should have known not to install the VZW apps that were previously installed on my HTC One M8 (purchased directly from VZW), but in my excitement for the new phone, it skipped my mind. Anyhow, no issues through 9/19. "Verizon" displayed as my carrier, and full access to the LTE network.
Fast forward to 9/20 (post B27 update) when one of the VZW updated automatically (I don't recall which of the 2 apps I had installed), and BAMM, "123456" displayed as my carrier and no more access to the LTE network (3G only). Later that evening, my VZW account showed my number with an "unauthorized, non-VZW device", whereas, before the VZW app update it showed my HTC one M8. I removed the SIM and shut down the phone, re-installed the SIM and re-booted....nada. Tried what seemed to be every permutation of replacing the SIM card, played around with APN settings...no dice.
My feeling is they booted me off 4G LTE once the app recognized I was using an unauthorized, non-VZW device. The steps below solved the issue (Provided by "vzwcdma" via the ZTE Community Forum).
"As for losing LTE connectivity, I've had a similar problem before, both on the A7 and other devices. On other devices, like Motorola devices, I could just boot into the bootloader and clear the modem state partitions via fastboot, but ZTE seems to have disabled that function in the A7's bootloader. So, for the A7, I had to mess around a bit with the modem mode. Download "Network" or "4G LTE Switch" from the Play Store. Open it and scroll down to "Set preferred network type", where it should say "LTE/GSM/CDMA auto (PRL)". There isn't really a set guide for what you have to do, but try switching into LTE-only mode, try hitting "Turn off radio" and "Turn on radio" (not Airplane Mode), maybe try "LTE/CDMA audo (PRL)", maybe turn off radio, switch to LTE-only mode, turn on radio, etc. At some point (I'm not sure what) the phone will reset its modem state, and should re-connect to Verizon LTE (and when it does, switch the network type back to LTE/GSM/CDMA auto PRL.
My Verizon account also shows "unauthorized, non-VZW device". Shouldn't affect anything. I've been using an unauthorized/non-VZW device prior to the A7 with no issues as well."
roseykr said:
My VZW situation. Just an FYI post AND how to fix it.
I'm on Verizon, have had my Axon 7 for over a month now. No issues other than not having VoLTE, and the occasional software farts (Using Nova Launcher now). When I initially set-up my phone, I imported all previous apps directly from the Play Store. I should have known not to install the VZW apps that were previously installed on my HTC One M8 (purchased directly from VZW), but in my excitement for the new phone, it skipped my mind. Anyhow, no issues through 9/19. "Verizon" displayed as my carrier, and full access to the LTE network.
Fast forward to 9/20 (post B27 update) when one of the VZW updated automatically (I don't recall which of the 2 apps I had installed), and BAMM, "123456" displayed as my carrier and no more access to the LTE network (3G only). Later that evening, my VZW account showed my number with an "unauthorized, non-VZW device", whereas, before the VZW app update it showed my HTC one M8. I removed the SIM and shut down the phone, re-installed the SIM and re-booted....nada. Tried what seemed to be every permutation of replacing the SIM card, played around with APN settings...no dice.
My feeling is they booted me off 4G LTE once the app recognized I was using an unauthorized, non-VZW device. The steps below solved the issue (Provided by "vzwcdma" via the ZTE Community Forum).
"As for losing LTE connectivity, I've had a similar problem before, both on the A7 and other devices. On other devices, like Motorola devices, I could just boot into the bootloader and clear the modem state partitions via fastboot, but ZTE seems to have disabled that function in the A7's bootloader. So, for the A7, I had to mess around a bit with the modem mode. Download "Network" or "4G LTE Switch" from the Play Store. Open it and scroll down to "Set preferred network type", where it should say "LTE/GSM/CDMA auto (PRL)". There isn't really a set guide for what you have to do, but try switching into LTE-only mode, try hitting "Turn off radio" and "Turn on radio" (not Airplane Mode), maybe try "LTE/CDMA audo (PRL)", maybe turn off radio, switch to LTE-only mode, turn on radio, etc. At some point (I'm not sure what) the phone will reset its modem state, and should re-connect to Verizon LTE (and when it does, switch the network type back to LTE/GSM/CDMA auto PRL.
My Verizon account also shows "unauthorized, non-VZW device". Shouldn't affect anything. I've been using an unauthorized/non-VZW device prior to the A7 with no issues as well."
Click to expand...
Click to collapse
Good to know! I've had so many phones and this hardware looks so awesome for the price, but of course vzw isn't gonna play nice with it without some work. Looking forward to getting mine
Verizon still working fine for me.
After the b27 update I saw improved signal strength. I'm on page plus mvno. After driving in a fringe reception area, I lost lte,and I showed as roaming. It seemed to be using boost Mobile from what the phones network menus displayed. Axon doesn't have a mobile network setting for 'system b', only auto & home only. Tried both, rebooting each time, no fix. I ended up resetting phone, fixed it all. I then switched mobile network to home only, and hoping that it's done.
PS-after b27 I had to re-enable a couple settings, pinch for screen shot, etc.
Edit: it's now been several weeks with it set to home network only. I daily drive in fringe reception areas and have better signal strength than ever, with any phone/carrier combo. All is great, no more issues. Great phone!
For reference, I'm on page plus mvno, dropped in my activated sim from my old phone into the right-side sim slot for CDMA services. Then set to home only. Done.
Sent from my Axon 7 using XDA Labs
Just wanted to see if anyone else had inputs of post update Verizon service, good and bad... hasn't been a ton of chatter in the last week. I have a phone on its way from the egg, trying to decide if it's worth starting a new sim card with Verizon and dealing with that work around... is getting the number off a display and ordering online still the easiest way to get activated?
Works great on VZW still. Love the phone.
methcat said:
Just wanted to see if anyone else had inputs of post update Verizon service, good and bad... hasn't been a ton of chatter in the last week. I have a phone on its way from the egg, trying to decide if it's worth starting a new sim card with Verizon and dealing with that work around... is getting the number off a display and ordering online still the easiest way to get activated?
Click to expand...
Click to collapse
I'd say that the Axon works just as well on Verizon as it did prior to the update, but with potentially better signal strength though I didn't really have a big issue with that prior to the update so I'm not sure (the T-Mobile SIM does seem to do a lot better post-update...but Verizon has always worked well).
I really doubt you'll have any substantive trouble with VZW on this device, especially if you're willing and able to mess a bit with some of the more advanced settings just in case a problem does arise. Here are the oddities, and I'm trying to list *all* of them!
1. No VoLTE or (I presume) HD calling
2. Voicemail appears to have to be accessed by dialing *86 as opposed to long-pressing the '1' key
3. Roaming icon is present intermittently
4. Data roaming *must* be enabled to ensure consistent and reliable data service
5. Verizon's website won't recognize the device at all in the Account Overview pages (mine still shows the last "approved" device I had with my VZW SIM - an iPhone 6S)
6. MMS *may* require a hack to get the proper APN, though I've had no trouble with this (I'm prepaid though); the hack requires a GSM SIM, so beware of this
7. 1X reception *seems* a tad weak in terms of dBm but functionally it almost seems better than my other Verizon phones (weird!)
8. Carrier label will be either '123456,' '002127' (EvDO only), or (I think?) '31000' when not using LTE (i.e., 1X or 3G). When on LTE the phone should show "Verizon Wireless" as normal
9. A SIM/modem reset may be necessary once in a great while it seems...so it's good to understand how to navigate to the "Phone Information" screen to toggle radio settings...also, I've found just SIM-cycling with a GSM SIM will often fix any connectivity problems as well...and sometimes just rebooting the phone with no SIM at all can help too (or a combo of all the above!)
If you can tolerate the above issues then the phone is great. I really enjoy it. I've found the Verizon side of things to be pretty reliable on the Axon 7, even with my endless tinkering with radio modes and other stuff, which has seemed to get me into (recoverable) trouble a few times.
Most importantly - the endless chatter on various forums that Verizon "blocks" the Axon 7 and other non-approved devices is total bunk. In every case where I've run into an issue it can be resolved on my side - Verizon is doing nothing whatsoever to inhibit the use of the Axon 7 on its network as far as I can tell (notwithstanding activation hurdles, admittedly)...many of the people making such claims seem to be speaking from a standpoint of total ignorance and it's kind of getting annoying, to be honest...it seems like the minute someone has an issue with the Axon 7, some ignoramus gets on the relevant forums/comments and claims that Verizon is "blocking" the device. Total BS IMO.
Good luck! As far as activation is concerned...I'd say it might be best to just go to Wal-Mart and buy a cheap prepaid phone or something (looks like the HTC Desire 526 has a nano-SIM and is only $37.49 on their website)...or maybe a cheap nano-SIM'd Verizon phone off of Swappa or eBay? That's probably what I'd do...But I know neither of those solutions are particularly helpful...VZW definitely makes it a bit of a pain.
flyer_andy said:
I'd say that the Axon works just as well on Verizon as it did prior to the update, but with potentially better signal strength though I didn't really have a big issue with that prior to the update so I'm not sure (the T-Mobile SIM does seem to do a lot better post-update...but Verizon has always worked well).
I really doubt you'll have any substantive trouble with VZW on this device, especially if you're willing and able to mess a bit with some of the more advanced settings just in case a problem does arise. Here are the oddities, and I'm trying to list *all* of them!
1. No VoLTE or (I presume) HD calling
2. Voicemail appears to have to be accessed by dialing *86 as opposed to long-pressing the '1' key
3. Roaming icon is present intermittently
4. Data roaming *must* be enabled to ensure consistent and reliable data service
5. Verizon's website won't recognize the device at all in the Account Overview pages (mine still shows the last "approved" device I had with my VZW SIM - an iPhone 6S)
6. MMS *may* require a hack to get the proper APN, though I've had no trouble with this (I'm prepaid though); the hack requires a GSM SIM, so beware of this
7. 1X reception *seems* a tad weak in terms of dBm but functionally it almost seems better than my other Verizon phones (weird!)
8. Carrier label will be either '123456,' '002127' (EvDO only), or (I think?) '31000' when not using LTE (i.e., 1X or 3G). When on LTE the phone should show "Verizon Wireless" as normal
9. A SIM/modem reset may be necessary once in a great while it seems...so it's good to understand how to navigate to the "Phone Information" screen to toggle radio settings...also, I've found just SIM-cycling with a GSM SIM will often fix any connectivity problems as well...and sometimes just rebooting the phone with no SIM at all can help too (or a combo of all the above!)
If you can tolerate the above issues then the phone is great. I really enjoy it. I've found the Verizon side of things to be pretty reliable on the Axon 7, even with my endless tinkering with radio modes and other stuff, which has seemed to get me into (recoverable) trouble a few times.
Most importantly - the endless chatter on various forums that Verizon "blocks" the Axon 7 and other non-approved devices is total bunk. In every case where I've run into an issue it can be resolved on my side - Verizon is doing nothing whatsoever to inhibit the use of the Axon 7 on its network as far as I can tell (notwithstanding activation hurdles, admittedly)...many of the people making such claims seem to be speaking from a standpoint of total ignorance and it's kind of getting annoying, to be honest...it seems like the minute someone has an issue with the Axon 7, some ignoramus gets on the relevant forums/comments and claims that Verizon is "blocking" the device. Total BS IMO.
Good luck! As far as activation is concerned...I'd say it might be best to just go to Wal-Mart and buy a cheap prepaid phone or something (looks like the HTC Desire 526 has a nano-SIM and is only $37.49 on their website)...or maybe a cheap nano-SIM'd Verizon phone off of Swappa or eBay? That's probably what I'd do...But I know neither of those solutions are particularly helpful...VZW definitely makes it a bit of a pain.
Click to expand...
Click to collapse
#6 might not need the GSM SIM workaround anymore after the B27 update. The + sign shows up for me all the time now, even if I only have a Verizon SIM inserted.
thanks for the list guys, i think i'll give it a shot. i'm going to try to add it as a second line to my wifes plan online. is borrowing a friends imei from a nano phone still the best way to get a new activated sim for this phone?
that 526 is a predaid, will verizon just switch that sim to plan if i call in? or are they different?
---------- Post added at 03:42 PM ---------- Previous post was at 03:18 PM ----------
methcat said:
that 526 is a predaid, will verizon just switch that sim to plan if i call in? or are they different?
Click to expand...
Click to collapse
found this, not sure if this is still the rule...
http://www.prepaidphonenews.com/2016/02/new-policy-may-require-verizon-prepaid.html
"It turns out that Verizon made a policy change effective 1/17/16 that requires Verizon Prepaid Phones to be activated on Verizon Prepaid and have at least $30 in airtime applied to them before they cam be used on Verizon postpaid. A Reddit user posted a copy of an internal Verizon document detailing the new rule:
Effective 1/17/2016, customers who purchase a Prepaid 4G device must activate on a $30, $45, or $60 Prepaid plan and make at least 1 monthly service payment before they are eligible to move the device to a new or active Postpay account .
Device remains locked until first month’s payment is made on their Prepaid plan.
Device is unlocked automatically upon successful first month’s payment and can be used on Postpaid plan (new SIM or SIM swap).
Attempting to use an active Postpay SIM Card with a new 4G LTE Prepaid PIB smartphone prior to making the required monthly payment, hotlines the Postpay MDN (SFO 83643) . The hotline remains until first month’s payment is made.
Customers who activate on the $45 or $60 Prepaid plans and enroll in Auto Pay, receive bonus 1GB data per month.
If account is hotlined:
Data access, outgoing calls, and text messaging do not work.
Text message is sent to smartphone.
*VZW FREE MSG: Phone must be activated on Verizon Wireless Prepaid service and first monthly payment must be made before it can be used with any other service. *
Auto-remark is placed on the customer's account.
*SIM Swap attempted: MDN Hotlined. Phone must be activated on VZW Prepaid service and first month paid before it can be activated as postpaid. *"
methcat said:
thanks for the list guys, i think i'll give it a shot. i'm going to try to add it as a second line to my wifes plan online. is borrowing a friends imei from a nano phone still the best way to get a new activated sim for this phone?
that 526 is a predaid, will verizon just switch that sim to plan if i call in? or are they different?
---------- Post added at 03:42 PM ---------- Previous post was at 03:18 PM ----------
found this, not sure if this is still the rule...
http://www.prepaidphonenews.com/2016/02/new-policy-may-require-verizon-prepaid.html
"It turns out that Verizon made a policy change effective 1/17/16 that requires Verizon Prepaid Phones to be activated on Verizon Prepaid and have at least $30 in airtime applied to them before they cam be used on Verizon postpaid. A Reddit user posted a copy of an internal Verizon document detailing the new rule:
Effective 1/17/2016, customers who purchase a Prepaid 4G device must activate on a $30, $45, or $60 Prepaid plan and make at least 1 monthly service payment before they are eligible to move the device to a new or active Postpay account .
Device remains locked until first month’s payment is made on their Prepaid plan.
Device is unlocked automatically upon successful first month’s payment and can be used on Postpaid plan (new SIM or SIM swap).
Attempting to use an active Postpay SIM Card with a new 4G LTE Prepaid PIB smartphone prior to making the required monthly payment, hotlines the Postpay MDN (SFO 83643) . The hotline remains until first month’s payment is made.
Customers who activate on the $45 or $60 Prepaid plans and enroll in Auto Pay, receive bonus 1GB data per month.
If account is hotlined:
Data access, outgoing calls, and text messaging do not work.
Text message is sent to smartphone.
*VZW FREE MSG: Phone must be activated on Verizon Wireless Prepaid service and first monthly payment must be made before it can be used with any other service. *
Auto-remark is placed on the customer's account.
*SIM Swap attempted: MDN Hotlined. Phone must be activated on VZW Prepaid service and first month paid before it can be activated as postpaid. *"
Click to expand...
Click to collapse
Dang...yeah I think you're right about this. My mistake...ugh I wish they'd just make it easy! In that case I'd say Swappa would be the best route...I've bought a few phones off of there and it's always been a great experience.
What are your APN settings? I'm having issues getting my data to work on Verizon.
Salmonella lolz said:
What are your APN settings? I'm having issues getting my data to work on Verizon.
Click to expand...
Click to collapse
Mine: http://forum.xda-developers.com/showpost.php?p=68263623&postcount=61
So frustrating. Before update used today Verizon in upper left corner. Switched to 123456 after update. Rebooted and it went back. After another reboot it only says 123456 and nothing I do will change it back. And now when I get an MMS hangouts tells me it needs to download it but nothing happens. I never get LTE anymore either.
Edit: not sure what I did but it's back now. Might have something to do with bearer in apn settings being lte.
KyJelly69 said:
So frustrating. Before update used today Verizon in upper left corner. Switched to 123456 after update. Rebooted and it went back. After another reboot it only says 123456 and nothing I do will change it back. And now when I get an MMS hangouts tells me it needs to download it but nothing happens. I never get LTE anymore either.
Edit: not sure what I did but it's back now. Might have something to do with bearer in apn settings being lte.
Click to expand...
Click to collapse
That's #9 in the above list that was posted. Need to cycle the modem state of the device.
so, can someone help me with a little clarification? did ZTE ever actually disable anything regarding Verizon on this phone? i know when people quote the webinar, it sounded like they were going to. i understand that the functionality is basically all still working, but i'm wondering if maybe i'm confused on the terminology.
in this post on reddit, i heard the same thing that has been repeated by some, and i am wondering if i have my band terminology confused. is the cdma part different from the 4g lte part(and that's why it's still working)?, or is sarah just incorrect?
SarahSchmera 3 points 9 hours ago
Axon 7
Doesn't work on Verizon yet. It supposedly has CDMA radios but the radio firmware has them disabled. ZTE can't by law enable the CDMA radios because they didn't get FCC approval for the CDMA radios. They would have to pay for the testing and then resubmit the device to the FCC to get approval before they turned on the CDMA radios through a software update.
And the device doesn't have the firmware for VoLTE, HD calling or WiFi calling on Verizon.
Click to expand...
Click to collapse

Lost LTE on Verizon

Ok... I screwed up! There is a new Verizon tower near my house and I wanted to update my roaming, so I did the *228. Alas, by accident I chose option 1 (Program phone) instead of option 2 (Update roaming). Immediately after that I lost LTE. 3G is the best I now get.
I am running 7.1 latest update. Not rooted.
Suggestions on how to get LTE back up?
Thanks!
Zargone said:
Ok... I screwed up! There is a new Verizon tower near my house and I wanted to update my roaming, so I did the *228. Alas, by accident I chose option 1 (Program phone) instead of option 2 (Update roaming). Immediately after that I lost LTE. 3G is the best I now get.
I am running 7.1 latest update. Not rooted.
Suggestions on how to get LTE back up?
Thanks!
Click to expand...
Click to collapse
https://forum.xda-developers.com/showpost.php?p=74920423&postcount=506
That describes steps if I were using Oreo but alas, I am on Nougat. I will look for similar issues.
Thanks!
Tried the recommended steps. Worked for about an hour. Then back to 3G. THEN noticed I could not send a text message! GROAN...
Zargone said:
Tried the recommended steps. Worked for about an hour. Then back to 3G. THEN noticed I could not send a text message! GROAN...
Click to expand...
Click to collapse
Try this:
*#*#4636#*#*
Phone Information
Change Preferred network type to LTE/WCDMA
If after cycling your connectivity it doesn't pop onto the Verizon 4G network, reboot your phone, you should be good then.
I dont know what it is about that setting that is different, because Verizon doesnt support WCDMA, however this seems to select the correct type of LTE connectivity and you'll be in that. Be aware though, this will likely prevent 3G from working if you enter an area without good 4G coverage.
I have tried all recommendations. LTE works for a while then it is back to 3G. On a further note, when this happens I cannot send a text message but a reboot will solve the text message issue.
I am at a loss. It seems there is no way to make the settings accessed by *#*#4636#*#* STICK.
Zargone said:
I have tried all recommendations. LTE works for a while then it is back to 3G. On a further note, when this happens I cannot send a text message but a reboot will solve the text message issue.
I am at a loss. It seems there is no way to make the settings accessed by *#*#4636#*#* STICK.
Click to expand...
Click to collapse
It not just you. I have been frustrated for weeks. I thought it was only because I upgraded to 8.1 but your situation just answered that. I just ordered a new SIM from Verizon and wont run any programming once I install it. I contacted Essential on it as well as others. I hope the two can work this out.
Best option is a new some. *228 is usually no suggested on LTE unless you really know what you are doing. The PRL should be automatic on LTE.
get a new sim, your is borked now most likely
Will try new SIM tomorrow and let you know...
A VZW rep had me do *228 when I was having some issues with texting when I first got the phone. Fixed the texting issues but then I couldn't get LTE either. A new SIM fixed both issues I was having. *228 is apparently known to bork VZW LTE.
Had the same issues after using the *228 method I advise not using that at all been stuck on 3g since. Getting a new sim thursday hoping that helps (using straight talk Verizon Sim)
Here is a bit of information I have discovered. The phone is stable as long as I NEVER turn on WiFi! IF I have WiFi turned on (no connection to a network required) AND I enter a poor or non-existent service area, I loose service until I go back in with the *#*#4636#*#* and change settings back yet again!
anyone with a new sim got it working? Verizon shipped me one today and put it in. Avoided calling 228 but cannot get the sim to activate itself.
Got a SIM not provisioned error. I turned it off, took the SIM out and checked it, put it back, rebooted and still nothing. Not connecting to Verizon Network. Im afraid to call support because they will insist to call 228 to program it.
BTW the final version of 8.1 fixed all the Verizon weirdness I had going on. I popped it back in 'Global' in the Mobile Network settings (which is equivalent to 'LTE/CDMA/UMTS (PRL)' in the Phone Information section) and it hopped immediately on to Verizon, no kinda looking like sprint, no blank, no need to dial *228 for a new PRL it just worked. In fact on reboot it doesn't sit there with No Service scrolling across the screen for 15-20 seconds after boot, it shows up Verizon Wireless immediately.
wolfhelm said:
BTW the final version of 8.1 fixed all the Verizon weirdness I had going on. I popped it back in 'Global' in the Mobile Network settings (which is equivalent to 'LTE/CDMA/UMTS (PRL)' in the Phone Information section) and it hopped immediately on to Verizon, no kinda looking like sprint, no blank, no need to dial *228 for a new PRL it just worked. In fact on reboot it doesn't sit there with No Service scrolling across the screen for 15-20 seconds after boot, it shows up Verizon Wireless immediately.
Click to expand...
Click to collapse
That's good to hear I switched to an old straight talk TMobile sim I had while I wait for the replacement straight talk Verizon version hoping things go as smoothly for me when I pop it in
wolfhelm said:
BTW the final version of 8.1 fixed all the Verizon weirdness I had going on. I popped it back in 'Global' in the Mobile Network settings (which is equivalent to 'LTE/CDMA/UMTS (PRL)' in the Phone Information section) and it hopped immediately on to Verizon, no kinda looking like sprint, no blank, no need to dial *228 for a new PRL it just worked. In fact on reboot it doesn't sit there with No Service scrolling across the screen for 15-20 seconds after boot, it shows up Verizon Wireless immediately.
Click to expand...
Click to collapse
Very frustrating for me. This is my only concern with this phone . Im still stuck in 3G after doing the upgrade, hard reset, and popping in a new SIM without dailing 228. I will change my Mobile Netwok settings to yours above.
Bigdny said:
Very frustrating for me. This is my only concern with this phone . Im still stuck in 3G after doing the upgrade, hard reset, and popping in a new SIM without dailing 228. I will change my Mobile Netwok settings to yours above.
Click to expand...
Click to collapse
May you should try reinserting your sim my phone self corrected once my update was done.
Here are my results:
Installed new SIM - same issue
Did a network data settings reset
Verizon did a flush and reinitialize of my account.
Still same result.
Don't know exactly how or why but about 10 mins later I noticed my phone was OFF.
I powered back up and MOST issues we're gone.
The final fix was to go into developer options and turn on "cellular data always active"
Working great on LTE+
Bigdny said:
Very frustrating for me. This is my only concern with this phone . Im still stuck in 3G after doing the upgrade, hard reset, and popping in a new SIM without dailing 228. I will change my Mobile Netwok settings to yours above.
Click to expand...
Click to collapse
Try putting it in "4G/LTE", wait for it to connect, then back to Global.
After I posted my above message, I did go mucking around in the settings and got it stuck in 3G (even after reboots, etc), then corrected it by doing this.
And quick clarification for the post above this one, it is "Mobile Data Always Active", mine was already on and I never modified it, so that must be the default.

Anyone with a Verizon unlocked G6 use/test a 3rd party sim? (+ rooting question)

Just as the title says, has anyone successfully used an unlocked, Verizon branded LG G6 (VS988) with a third party sim (for data and making phone calls? Which country are you in, which sim cards are you using, any attempts abroad/traveling, etc?
Bought a mint unlocked Verizon LG G6, confirmed it was unlocked by two Verizon reps over the phone, and one in-person Verizon rep in my city. With the in-person rep (as well as on my own of course), we could not get my T-mobile, Three (a UK sim), and Project Fi to work with the phone, for data/phone/SMS.
Not surprisingly, when he inserted a Verizon Sim, of course it worked. The rep genuinely tried his best to help, but in the end was like "sorry, ¯_(ツ)_/¯ " and said it was probably an unresolveable network problem, and yes, that the phone was definitely unlocked (checked his database).
Before I came to his shop, though, I spent a couple hours at home tinkering with ALL the phone settings (set up a verified APN, toggle global/LTE-GSM-CDMA options, set data roaming ON), and the best I could get was the G6 successfully connecting to T-Mobile for all of 30 seconds (I could surf the web, but NO phone calls), then losing all bars of connection and cutting out entirely. Toggling airplane mode allows you to connect for at most 30 seconds at a time, also, weirdly enough.
What gives? I confirmed the sim cards worked on my other unlocked devices (LG G5, 1+5, Xiaomi Redmi), and I really want to use this G6 here (USA), but more especially, while I am traveling abroad and looking to use whatever country's local sim cards.
Lastly, do you think rooting this phone and installing a custom ROM would help the issue? I prefer not to return this phone because I got a decent deal on it (through ebay's 20% off) and everything else about it is awesome.
Hi
While not strictly the same, I have Verizon LG V20 VS995 with a similar problem with my EE sim which will not register properly and when it does it is only 3G instead of 4G/LTE but keeps dropping off. Where I differ from you is that I can use an O2 sim and get both calls and 4G/LTE data with it. I live in UK. Hope this might help.
Sent from my VS995 using Tapatalk
My G6 is the unlocked us997, but the wifes is the Verizon Unlocked G6. UNFORTUNATELY I have yet to get her MMS messages working on it for her but everything else works perfectly fine, on TracFone sim (on AT&T network), ... And FYI, only the bootloader unlocked LG G6 can be rooted, all the carrier version, whether they're network locked or unlocked, they're most definitely bootloader locked, thus no root :<P
I got the same phone as you...I live in the Dominican Republic using a Claro chip...Bought the phone from ebay unlocked. So there is something you must talk with verizon so they unlock it. On the other hand we cant root our phones only the europe and US version can be rooted.
Have you checked if this phone has a region locked on it? And if it's removed by placing that 5 minutes-long phone call?
Also, once the SIM (non-Verizon SIM) did you check the APN settings if they are the correct one for your carrier?
I have a similar problem
I bought an unlocked Verizon G6 vs988 on ebay (the listing actually said US997).
I managed to get it to work for phone calls and sms but could not set the data.
I manually set the APN but it would not stay "chosen".
I got all the settings but when I chose it and closed the screen it got unchosen (unchecked) and I did not get a data connection.
is there any custom rom for this model?
would a firmware for the us997 work on this model?
Bump
physics.dor said:
I bought an unlocked Verizon G6 vs988 on ebay (the listing actually said US997).
I managed to get it to work for phone calls and sms but could not set the data.
I manually set the APN but it would not stay "chosen".
I got all the settings but when I chose it and closed the screen it got unchosen (unchecked) and I did not get a data connection.
is there any custom rom for this model?
would a firmware for the us997 work on this model?
Click to expand...
Click to collapse
If you are in U.S. it should work fine with AT&T and T-mobile, as long as correct APN has been entered. once you enter the new APN, you must select the 3dots, on top right and save, once the new SIM inserted, just go back to APN and select the correct APN.
If you are outside U.S, the LG G6 Verizon unlocked does not have B1 (2100) which is required by most GSM carriers out side US, so you can get 3G or in most cases 2G (E) network only. LG G6 AT&T unlocked works fine outside US, but it does not have CDMA technology and can't be use with Verizon or Sprint. hope that helps
Hi , I have a similar problem. I bought vs988 verizon version and popped in a MINT sim. I had issues setting it up but eventually got it work via the pull down menu in the 'settings' at the top that said 'mobile data off - turn on?' - now this has vanished- can I get this back ?
The mobile data button in the notification tab and the actualy mobile button in the mobile data section in 'settings' do not work (and never have) - they always ask me to contact verizon.
So what do i do ? I have no mobile data now. And it's a pain.
My issue is partially solved in that when I 'reset network settings' and then re-add my APN (for mint) it automatically turns on mobile data. Using the other 'mobile data' buttons (as I mention below do not work).
And now that mobile data is on - I use airplane mode to turn it off, and turn on wifi (because i have google voice I still get voice calls). Anyway this works if you have a similar problem.
I am wondering if this issue would exist if I used a Verizon MVNO (instead of Mint/t-mobile) ?
(so by it being offically "unlocked" actually is not really true - when i first bought the phone I messaged LG and they suggested i needed to send it into them so it could be re-flashed. They would charge me for it and I would lose my phone for about 2 weeks - which is a pain, and not worth the expense)
sammyDC said:
Hi , I have a similar problem. I bought vs988 verizon version and popped in a MINT sim. I had issues setting it up but eventually got it work via the pull down menu in the 'settings' at the top that said 'mobile data off - turn on?' - now this has vanished- can I get this back ?
The mobile data button in the notification tab and the actualy mobile button in the mobile data section in 'settings' do not work (and never have) - they always ask me to contact verizon.
So what do i do ? I have no mobile data now. And it's a pain.
Click to expand...
Click to collapse
I have the verizon version of lg g6 and it works perfectly fine in Nigeria with all nigerian sims:mtn,airtel,glo,9mobile and even works on 4g let but I set the network mode to global and I receive calls and sms promptly

Help! Sprint LG V20 LS997 ZVC Android 7.0. Can't set APN.

I have a LS997 that I purchased from eBay a few years ago. I kept the phone at 7.0 and I definitely was able to set the APN. I used it on T-Mobile for test, I was able to enter fast.t-mobile.com as APN and everything works. I then used it on Tello (Sprint network).
I was told that I can switch to GSM, since it is T-Mobile's network, I thought no problems. Ordered the GSM SIM, activated. After I swapped the SIM, I realized that the APN cannot be set. There is simply no "..." menu like I use to. All I see is a greyed out word of "otasn" in the APN list.
I tried putting in a T-Mobile SIM. It works. I see a grayed out fast.t-mobile.com APN with a unselected radio button. But internet works and everything.
STILL NO "..." MENU.
It seems my ability to edit APN has somehow been taken away. I doubled checked the Android version is still 7.0 ZVC and I have not upgraded it.
I honestly don't know how the V20 ended up like this. Can someone help me out?
Tried installing an app that edits APN. It managed to bring up an APN setup menu. I can see the familier setup page but everything is grayed out and cannot be edited.
nookin said:
Tried installing an app that edits APN. It managed to bring up an APN setup menu. I can see the familier setup page but everything is grayed out and cannot be edited.
Click to expand...
Click to collapse
Try to go to options, then system updates, then select uicc unlock. Usually unlocks sim for apn if able.
Mysticblaze347 said:
Try to go to options, then system updates, then select uicc unlock. Usually unlocks sim for apn if able.
Click to expand...
Click to collapse
That doesn't seem to do anything. I also found a post mentioning installing Pulse SMS app allows changing APN. That didn't work either. I am really puzzled why the ability to change APN were gone. I am certain that I was able to add APNs. At least right now, it can detect T-Mobile SIM and use its APN automatically (likely because I entered it in the past). I am worried that once I factory reset the phone, even that is gone.
nookin said:
That doesn't seem to do anything. I also found a post mentioning installing Pulse SMS app allows changing APN. That didn't work either. I am really puzzled why the ability to change APN were gone. I am certain that I was able to add APNs. At least right now, it can detect T-Mobile SIM and use its APN automatically (likely because I entered it in the past). I am worried that once I factory reset the phone, even that is gone.
Click to expand...
Click to collapse
There is a small app that can add an additional APN entry that might work here as some people have done this on the Sprint LG G8. Have a look at this set of comments for the link of the app.
But you should also be aware that some time next year, your LS997 will stop working for phone calls since it can't get VoLTE on T-Mobile, so once they take down both 2G and 3G networks, it will become a data-only device in the U.S.
C D said:
There is a small app that can add an additional APN entry that might work here as some people have done this on the Sprint LG G8. Have a look at this set of comments for the link of the app.
But you should also be aware that some time next year, your LS997 will stop working for phone calls since it can't get VoLTE on T-Mobile, so once they take down both 2G and 3G networks, it will become a data-only device in the U.S.
Click to expand...
Click to collapse
I read that if you go to TMobile and get a new sim that we can still have service. Just be fully TMobile. No Sprint at all. Something to do with new network merge tool they have. Its called TNX.
Mysticblaze347 said:
I read that if you go to TMobile and get a new sim that we can still have service. Just be fully TMobile. No Sprint at all. Something to do with new network merge tool they have. Its called TNX.
Click to expand...
Click to collapse
I was already referring to full T-Mobile here. The LS997 isn't configured to get VoLTE at all, so all calls would still just go through 2G/3G on any network. It's easy to check by having cellular data on with Wi-Fi off and making a call and see if the LTE icon stays on or immediately switches to 3G or below.
For the few of us on rootable LS997 models, there might be a wild experiment to try by running US996 firmware and see if VoLTE can get enabled on there.
Mysticblaze347 said:
I read that if you go to TMobile and get a new sim that we can still have service. Just be fully TMobile. No Sprint at all.
Click to expand...
Click to collapse
C D said:
I was already referring to full T-Mobile here. The LS997 isn't configured to get VoLTE at all, so all calls would still just go through 2G/3G on any network. It's easy to check by having cellular data on with Wi-Fi off and making a call and see if the LTE icon stays on or immediately switches to 3G or below.
For the few of us on rootable LS997 models, there might be a wild experiment to try by running US996 firmware and see if VoLTE can get enabled on there.
Click to expand...
Click to collapse
I found a board for a rootable ls997, but I currently have just root shell sadly. Oreo here. Old full root died. I may be screwed. We shall see in a few months. Unless tmobile version will work fine still. I may be forced to downgrade (upgrade). I dont have tmobile version, but if I were to get another v20 maybe only option aside from an us996. I hate this forced crap. V20 days maybe closing up. Super sad n stuff.
Didn't mean to change topic, but was just saying.
Mysticblaze347 said:
Didn't mean to change topic, but was just saying.
Click to expand...
Click to collapse
You're not too far off-topic since the future of the LS997 on T-Mobile still concerns OP here. My MVNO already stopped new Sprint network activations and started moving to Verizon, so I jumped over to T-Mobile prepaid and finally let go of my LS997 as my daily driver. I could still mess around later this year with US996 firmware and let you know what I can find.
But if you want to stick with your unrootable LS997, then you still have plenty of time for next year. From what I read, T-Mobile will shut down their 3G network by July 1st, 2022 while no official date has been set for turning off their 2G portion. However, even with 2G and 3G still working for calls, if you ever happen to be in a spot where there's only an LTE band signal without 2G/3G, then you won't be able to make or take calls there.
So the only safe way to keep going on a V20 with T-Mobile is to get their H918 model. But even then, you're still limited to Android Oreo, which some apps may eventually abandon as they might raise the minimum requirement to Pie or higher at some point.
C D said:
You're not too far off-topic since the future of the LS997 on T-Mobile still concerns OP here. My MVNO already stopped new Sprint network activations and started moving to Verizon, so I jumped over to T-Mobile prepaid and finally let go of my LS997 as my daily driver. I could still mess around later this year with US996 firmware and let you know what I can find.
But if you want to stick with your unrootable LS997, then you still have plenty of time for next year. From what I read, T-Mobile will shut down their 3G network by July 1st, 2022 while no official date has been set for turning off their 2G portion. However, even with 2G and 3G still working for calls, if you ever happen to be in a spot where there's only an LTE band signal without 2G/3G, then you won't be able to make or take calls there.
So the only safe way to keep going on a V20 with T-Mobile is to get their H918 model. But even then, you're still limited to Android Oreo, which some apps may eventually abandon as they might raise the minimum requirement to Pie or higher at some point.
Click to expand...
Click to collapse
As of today I got a message saying my device needs to upgrade or sim upgrade to keep service after 1/1/21. https://www.sprint.com/en/support/cdma-retirement-legal-notice.html
Mysticblaze347 said:
As of today I got a message saying my device needs to upgrade or sim upgrade to keep service after 1/1/21. https://www.sprint.com/en/support/cdma-retirement-legal-notice.html
Click to expand...
Click to collapse
If your LS997 is SIM-unlocked like OP's, then you could get a T-Mobile SIM card and keep going until T-Mobile shuts down both their 2G & 3G networks next year. Just be aware that no Sprint-branded phone will pass T-Mobile's IMEI checker. But you should have a VoLTE-compatible backup phone ready to go if you start running into LTE-only or low-signal areas.
FWIW, I factory reset my LS997 V20 (still on Android 7.0) and I still cannot edit the APN. Even worse is that I now cannot use it with T-Mobile since the fast.t-mobile.com APN is gone. I regret resetting it. It is now useless as a smartphone since Sprint CDMA is history and phone cannot pick up LTE signal from other LTE carriers.
I have no idea why my LS997 lost its ability to edit APN even though I did not accept software updates. There does not seem to have any way to bypass the APN write protection.
nookin said:
FWIW, I factory reset my LS997 V20 (still on Android 7.0) and I still cannot edit the APN. Even worse is that I now cannot use it with T-Mobile since the fast.t-mobile.com APN is gone. I regret resetting it. It is now useless as a smartphone since Sprint CDMA is history and phone cannot pick up LTE signal from other LTE carriers.
I have no idea why my LS997 lost its ability to edit APN even though I did not accept software updates. There does not seem to have any way to bypass the APN write protection.
Click to expand...
Click to collapse
To me it sounds like sim relocked. Might need to call tmobile/Sprint to unlock again. You could also try rooting (since you have rootable firmware [under zvd]) or temp root; then use an app called shortcut master lite and edit apn that way. I am not sure if app works without root access. I really don't know otherwise. Dumb when crap auto happens. If your sim is unlocked again. You may not need apk to edit apn again.
I guess V20 has a different way of locking the SIM. The modem seems to be SIM unlocked but the phone's firmware prevents me from editing or adding APN. And they seem to be good at it as I have tried multiple methods to no avail.
In addition, I don't know how T-Mobile/Sprint could unlock the phone since phone does not ask for unlock pin.
Maybe rooting would work, if my firmware can still be rooted. I might as well just throw in a new OS since updating firmware will relock the APN. I
As far as I know, only software versions up to ZV7 (security patch level date of May 1, 2017) can get full root. On those versions, you could freely edit the APN values within a hidden menu, and those options seem to be gone on later software.
Sprint phones are notorious for having grayed out APN settings out of the box or after factory resets or major Android version updates. When they're grayed out, you pretty much have to hope that whatever default APN values the phone reads from your SIM card are the ones you want. Otherwise, you'll have to find another way to edit the values. The small app I linked earlier from the G8 is an interesting approach, but it appears to require ejecting the SIM card with the phone staying on which is not possible on the V20 since the battery blocks the card slot, so I'm not sure if that method can be applied to the V20.
I think Sprint and T-Mobile do SIM-unlocking by connecting to a remote server.
This is actually the 2nd LG LS997 I bought off eBay. I think both phone comes with ZV7 or so. The first phone I tested that it is unlocked and I let it upgrade 1 after another until it reached Android 8 and I lost data. Since the seller advertised the phone as unlocked, I didn't have issue returning the phone.
The 2nd phone I am more careful and I stayed at ZVC. I verified that I can edit APN and all even after factory reset. I think the reference about ZV8 is that user cannot edit APN using the Hidden Menu trick beginning ZV8. But supposingly, my phone is unlocked so APN can be edited. But throughout the internet, there are LS997 users reporting phone is locked again after upgrading to Android 8.
On top of that, I am not sure how my phone was unlocked as I also discovered that if I enable secure boot (require PIN during boot) will disable APN editing. I have no idea why they are related. My guess is that my phone isn't unlocked via official means and maybe someone messed with the bootloader in order to unlock.
I am rethinking my options:
1. Root my phone (since I am still on Android 7) and try APN editing using root privilege (not sure what app to use)
2. Root my phone and install LineageOS. Since it is a different firmware, I assume there won't be APN write protection.
3. Upgrade phone to Android 8 and try calling T-Mobile to unlock (I was never a Sprint customer).
4. Try eBay seller who can remote unlock phone for ~$7. They claim they can unlock LS997 with Android 8. It is a lot of hassle as I won't use my regular computer for this type of activity.
Option 1/2 and 3/4 are mutually exclusive.
C D said:
As far as I know, only software versions up to ZV7 (security patch level date of May 1, 2017) can get full root. On those versions, you could freely edit the APN values within a hidden menu, and those options seem to be gone on later software.
Sprint phones are notorious for having grayed out APN settings out of the box or after factory resets or major Android version updates. When they're grayed out, you pretty much have to hope that whatever default APN values the phone reads from your SIM card are the ones you want. Otherwise, you'll have to find another way to edit the values. The small app I linked earlier from the G8 is an interesting approach, but it appears to require ejecting the SIM card with the phone staying on which is not possible on the V20 since the battery blocks the card slot, so I'm not sure if that method can be applied to the V20.
I think Sprint and T-Mobile do SIM-unlocking by connecting to a remote server.
Click to expand...
Click to collapse
My bad, I thought zvc was the root able for some reason. ZV7 yes. Its been awhile and lil under the weather. Brain is scrambled lol.
So... you mean my ZVC is not rootable?
nookin said:
So... you mean my ZVC is not rootable?
Click to expand...
Click to collapse
Zvc has arb I believe. Damn Sprint. Only other way for Root possiblity would be temp root. Not full root, but you would at least have root shell. https://forum.xda-developers.com/t/3-18-71-perf-root-root-shell-for-lg-v20-variants.3990145/page-5. Download on page 5 at top post. Instructions on first page. I know this works for oreo. Not too sure about Zvc.

Categories

Resources