Sprint unlocked S8 but when I can't get it to work with gsm sims - Samsung Galaxy S8 Questions and Answers

I just got my S8 unlocked from Sprint, the UICC says it's unlocked for all sims in the settings. But I've tried both an AT&T sim and a T-mobile sim. The tmobile splash screen comes up and it even shows the tmobile phone number in my about phone settings, but I can't get any data or calling or anything to work. Same for AT&T. It even says AT&T up in the top as carrier but nothing works.
Do I need to do something like flash it, or is it possible they only did international unlock is why this is happening? Or is it because I still have Sprint service on the phone? All I know is in settings area for UICC it says any sim will work, but it's not working.

wubbalubbadubdub420 said:
I just got my S8 unlocked from Sprint, the UICC says it's unlocked for all sims in the settings. But I've tried both an AT&T sim and a T-mobile sim. The tmobile splash screen comes up and it even shows the tmobile phone number in my about phone settings, but I can't get any data or calling or anything to work. Same for AT&T. It even says AT&T up in the top as carrier but nothing works.
Do I need to do something like flash it, or is it possible they only did international unlock is why this is happening? Or is it because I still have Sprint service on the phone? All I know is in settings area for UICC it says any sim will work, but it's not working.
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Click to collapse
Sometimes service is dependant on the apn settings. Check those and make sure network settings are swapped to global. Also radio switcher app.
Lastly the sprint firmware may not have needed bands enabled. These are all the things to check first

Related

Unlocked Imagio gives no signal on GSM

Hi! I bought my Imagio from verizon I unlocked it, but it doesn't recieve any GSM signal, the settings are on GSM/UMTS anyone has an idea how to resolve a problem... By the way is anyway to cook this?
I need to unlock my phone before I travel in a few days, how did you unlock your phone?
akomecr said:
Hi! I bought my Imagio from verizon I unlocked it, but it doesn't recieve any GSM signal, the settings are on GSM/UMTS anyone has an idea how to resolve a problem... By the way is anyway to cook this?
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Click to collapse
Do you have a working SIM card from AT&T or T-Mobile in the SIM slot?
bastukee said:
I need to unlock my phone before I travel in a few days, how did you unlock your phone?
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Click to collapse
Call VZW and ask.
On ebay it's a ton of services about whitestone unlock, and my problem was an issue on the operating band of GSM for example in the USA you must use 950/1900 on other countries like Costa Rica you need 1800, thanks to all for your help
You should be able to contact VZW and have them unlock it so you can use whatever carrier SIM you have for the country/area you are in. The stock SIM is Vodaphone and I think will only work where Vodaphone service exists. Otherwise make sure the phone is in Global and not CDMA only. Go to the Settings Tab, click Menu then select Phone Network Mode select Network tab.
I called verizon and they gave me codes to unlock both my phones. I slapped an ATT sim into my imagio and it was working on the ATT network, no problem at all.
Hi, where do you enter the sim unlock code on Imagio?
Thanks.
devlspawn said:
I called verizon and they gave me codes to unlock both my phones. I slapped an ATT sim into my imagio and it was working on the ATT network, no problem at all.
Click to expand...
Click to collapse
I just got off the phone with Verizon in regard to this.
Below is what I found. The Global Verizon Rep will be happier if you enter the code while you are on the phone with them; they want to verify that it works. It actually took about 10 minutes.
Here is what I found: http://pdaphonehome.com/forums/htc-imagio/138569-how-unlock-verizon-imagio-sim-card.html
If you are going to be traveling abroad or simply want your Imagio to be unlocked its very easy to do and should only take about 3-5 minutes on the phone with Verizon.
Call 1(800)-711-8300 from a different phone, enter your Verizon phone number, then select option 2.
Tell them that you will be traveling abroad and plan to just buy a pre-paid SIM card when you get there, and that you simply need the unlock code for your phone. They will check your account standings, and then give you an 8 digit code.
You need to enter the code in the security section of your phone.
With TF3D...
Start>Settings> All Settings> Personal> Security
Without TF3D Enabled...
Start> Settings> Personal> Security
One you do this, soft reset your phone and you are all done. I can take my work phones SIM card (AT&T), put it in my Imagio, and use my Imagio for work now. I did not test the data yet because I do not have data on my AT&T plan. Although if anyone does this and wants to check it, keep in mind you will have to change the number for the data line. both Sprint and Verizon use #777. I am not sure what AT&T or TMobile use.
I have an Imagio from VERIZON.
I had unlocked the GSM network, Should I Unlock the CDMA network as well if I want to use the CDMA Net work?
or I jus need 1 unlock code for both GSM and CDMA?
So, I will have 2 no. in 1 phone one is injected, and another one is using sim card.

Verizon G2: Restricted Access Changed - TMo SIM

Got this error message when using a TMo SIM in a Verizon G2. I've only seen one thread about this for the G2.
Verizon G2s are SIM unlocked, right? So it shouldn't be a problem? I can put the TMo SIM in a TMo branded S2 and get full bars. I even tried the same SIM in a Verizon Galaxy S3 and got full bars.
I'm on VS98012B
As a follow up, I went into available networks and this time, TMobile at AT&T show up. I tried setting it to WCDMA and GSM but it wont register on the TMobile network.
This is a location that I can normally get LTE.
The VERIZON model is GSM unlocked. Says your on 12B so you should be good. You should be able to just pop and go. I don't have much experience with it but you would have to select GSM in the Network Settings.

[Q] Can't get I337 to work with Verizon after following unlock guide.

I have a SGH-I337 (AT&T) that I'm trying to get to work with a Verizon sim. I followed the steps in the post below.
http://forum.xda-developers.com/gal...aranteed-free-sim-unlock-mk2-nb1-nc1-t2852979
I follow the steps as stated but at the end the phone has no signal/loses signal using Verizon sim's.
Usually after a fresh boot, the phone will have bars but no data and cannot make calls. The phone states EMERGENCY CALLS ONLY at this point. After a few minutes the service bars will disappear and be replaced with a NO SERVICE indicator.
The phone no longer indicates an invalid sim, but does not auto load APN settings. Manually inputting the Verizon APN settings does not fix it either.
I have checked and it does NOT show the NULL IMEI on the *#06#. Also with the Verizon sim the hidden menus don't always function (*#0011# and such) although I've read that is an AT&T only thing, I'm not sure if that true.
When I insert an AT&T Sim it gets service/data immediately upon booting. I've also tried two different Verizon sim cards.
Thoughts or Suggestions? What am I missing?
VTAssault said:
I have a SGH-I337 (AT&T) that I'm trying to get to work with a Verizon sim. I followed the steps in the post below.
http://forum.xda-developers.com/gal...aranteed-free-sim-unlock-mk2-nb1-nc1-t2852979
I follow the steps as stated but at the end the phone has no signal/loses signal using Verizon sim's.
Usually after a fresh boot, the phone will have bars but no data and cannot make calls. The phone states EMERGENCY CALLS ONLY at this point. After a few minutes the service bars will disappear and be replaced with a NO SERVICE indicator.
The phone no longer indicates an invalid sim, but does not auto load APN settings. Manually inputting the Verizon APN settings does not fix it either.
I have checked and it does NOT show the NULL IMEI on the *#06#. Also with the Verizon sim the hidden menus don't always function (*#0011# and such) although I've read that is an AT&T only thing, I'm not sure if that true.
When I insert an AT&T Sim it gets service/data immediately upon booting. I've also tried two different Verizon sim cards.
Thoughts or Suggestions? What am I missing?
Click to expand...
Click to collapse
I don't own any Verizon phones myself, so I could be totally wrong but:
- Verizon's SIM cards are just for data.
- Verizon uses CDMA (Your subscriber identity is in the ESN/IMEI)
- AT&T uses GSM (Your subscriber identity is in the SIM)
Both networks require you to authenticate yourself with your subscriber identity before they will give you data access.
Sounds like Verizon doesn't have your IMEI, so the phone fails to authenticate/connect.
Try calling Verizon, tell them you got a new phone, and you would like to tell them the IMEI of the new one, so that it can connect to data services.
Either that or they need the number off the Verizon SIM
jdisco1 said:
I don't own any Verizon phones myself, so I could be totally wrong but:
- Verizon's SIM cards are just for data.
- Verizon uses CDMA (Your subscriber identity is in the ESN/IMEI)
- AT&T uses GSM (Your subscriber identity is in the SIM)
Both networks require you to authenticate yourself with your subscriber identity before they will give you data access.
Sounds like Verizon doesn't have your IMEI, so the phone fails to authenticate/connect.
Try calling Verizon, tell them you got a new phone, and you would like to tell them the IMEI of the new one, so that it can connect to data services.
Either that or they need the number off the Verizon SIM
Click to expand...
Click to collapse
I really do hope it's this simple. I'll try it tomorrow and let you know if it works.
I've never heard of a gsm phone working on cdma. Is it even possible?
Airtioteclint said:
I've never heard of a gsm phone working on cdma. Is it even possible?
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Me neither, but maybe since its unlocked? Plus it has an IMEI for Verizon to use...
jdisco1 said:
Me neither, but maybe since its unlocked? Plus it has an IMEI for Verizon to use...
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Click to collapse
It should be able to work with CDMA. I've seen the option in some of the menu's I've been through. And the guides have all said that they can work between AT&T and Verizon/T-Mobile or vice versa.
Also, AT&T will unlock the phone for you if you go to their website and fill out the stuff. The only reason I didn't do this is because I'm still under contract and I would have to break that and pay the early termination fee.

Verizon Moto g4 unlocked by Verizon

Has anyone who bought the g4 play Verizon version noticed the unlock policy says either use the phone for one year or make $75 in payments? I'm wondering if Verizon actually unlocks the device will it enable the 3g bands they are there but they're blocked. Has anyone actually had Verizon unlock this device?
How do you know that the 3G HSPA+ bands are present? The specs I've seen only list quad-band GSM, dual-band CDMA, and LTE bands 2, 4, 5, 13.
Ohk I got my Moto g4 unlocked and I actually got it to dial out the problem is I think because my phone is still on it kept taking me to Verizon my service was T-cdma and I couldn't find where I could input APN settings
snoopy1e11 said:
Ohk I got my Moto g4 unlocked and I actually got it to dial out the problem is I think because my phone is still on it kept taking me to Verizon my service was T-cdma and I couldn't find where I could input APN settings
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How did you get it unlocked?
I got the code from Verizon
chi321 said:
How did you get it unlocked?
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Click to collapse
I got the code from Verizon all u have to do is make $75 in payments and they'll unlock it but I tried it with at&t and T-Mobile and with at&t u don't get the same options as u do with T-Mobile so if it was gonna work T-Mobile would be the best bet to try
snoopy1e11 said:
I got the code from Verizon all u have to do is make $75 in payments and they'll unlock it but I tried it with at&t and T-Mobile and with at&t u don't get the same options as u do with T-Mobile so if it was gonna work T-Mobile would be the best bet to try
Click to expand...
Click to collapse
I notice that you have advanced 4g lte.
When I tried to get that option through Verizon they told me it was not available on this phone.
Obviously the phone is capable of this feature.
Did you get advanced 4g lte after unlocking it with the code on Verizon or because you are using a T-Mobile sim?
classic757 said:
I notice that you have advanced 4g lte.
When I tried to get that option through Verizon they told me it was not available on this phone.
Obviously the phone is capable of this feature.
Did you get advanced 4g lte after unlocking it with the code on Verizon or because you are using a T-Mobile sim?
Click to expand...
Click to collapse
Only when I insert a T-Mobile sim it doesn't even pop up when I insert an at&t sim and if u remove the battery while it's on the charger and insert any other sim it automatically greys out
snoopy1e11 said:
Only when I insert a T-Mobile sim it doesn't even pop up when I insert an at&t sim and if u remove the battery while it's on the charger and insert any other sim it automatically greys out
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Click to collapse
Okay, so the phone has the capability but only through T-Mobile it seems.
Verizon and AT&T must have some sort of block on their network so the feature can't be used on the xt1609. Why, idk.
Makes no sense to me.
In order to be able to dial out you have to change the CDMA Subscription to NV if not you'll get "sim error or no sim" but the calls are still over 1x. Also for whatever reason different sims make the phone act differently. At&t sims only give u an option for APN, if you use a T-Mobile sim long as you change the network mode from LTE to 3g or 2g you get options to change cmda subscription, APN, advanced 4glte, search for networks etc. My network was always T-Cdma on T-Mobile long as I changed to NV while on at&t no signal pops in at all
classic757 said:
Okay, so the phone has the capability but only through T-Mobile it seems.
Verizon and AT&T must have some sort of block on their network so the feature can't be used on the xt1609. Why, idk.
Makes no sense to me.
Click to expand...
Click to collapse
I'm gonna try again once my month is up if I'm not mistaken CDMA is programmed in the phone so that could be a reason I'm having trouble but I also thought that if I remove the sim the CDMA portion would still work which is not the case but either way all my calls are routed to Verizon
snoopy1e11 said:
I got the code from Verizon all u have to do is make $75 in payments and they'll unlock it but I tried it with at&t and T-Mobile and with at&t u don't get the same options as u do with T-Mobile so if it was gonna work T-Mobile would be the best bet to try
Click to expand...
Click to collapse
Have you ever tried the method which worked with the prepaid Verizon Moto E phone https://forum.xda-developers.com/mo...-to-verizon-moto-e-2015-gsm-network-t3098953?
I haven't tried it but I think I read somewhere that it didn't work as a matter of fact it doesn't work

H918 (T-Mobile) - Is it carrier unlocked?

Hi everyone.
I bought a V20 T-Mobile version H918 on eBay. Seller claims it's carrier unlocked. As a precaution, I bought a $10 Red Pocket prepaid SIM card to test it with (because my current phone is CDMA). First, I tested it with Red Pocket's "GSMA" sim card, which uses AT&T's network. When using this SIM, the phone mostly didn't work. Out of 30 tries, I was only able to make a phone call once. All other times, I got no dial tone. And I wasn't able to receive data at all. APN settings were correct, verified with Red Pocket customer service; also tried many other APNs I found on google, but they made no difference.
Next, after doing a factory reset, I tried Red Pocket's "GSMT" SIM card, which uses T-Mobile's network. When using this SIM, all services including calling, texting, mms, and data work perfectly. Although, despite it working, the phone is using the wrong APN (fast.t-mobile.com). This seems to be a hard default setting, and the phone doesn't allow me to select a different APN while this SIM card is inserted.
Red Pocket tells me that an unlocked phone should work fine with either the "GSMA" or the "GSMT" card. So, their advice, together with the fact that the phone isn't letting me change the APN when on T-Mobile's network, leads me to believe it might not be unlocked. How can I know for sure?
Note: IMEI registers as clean in the database. Also, the IMEI in settings, the one shown by dialing *#06#, and the one on the sticker all match.
Thanks!
cyberspectre said:
Hi everyone.
I bought a V20 T-Mobile version H918 on eBay. Seller claims it's carrier unlocked. As a precaution, I bought a $10 Red Pocket prepaid SIM card to test it with (because my current phone is CDMA). First, I tested it with Red Pocket's "GSMA" sim card, which uses AT&T's network. When using this SIM, the phone mostly didn't work. Out of 30 tries, I was only able to make a phone call once. All other times, I got no dial tone. And I wasn't able to receive data at all. APN settings were correct, verified with Red Pocket customer service; also tried many other APNs I found on google, but they made no difference.
Next, after doing a factory reset, I tried Red Pocket's "GSMT" SIM card, which uses T-Mobile's network. When using this SIM, all services including calling, texting, mms, and data work perfectly. Although, despite it working, the phone is using the wrong APN (fast.t-mobile.com). This seems to be a hard default setting, and the phone doesn't allow me to select a different APN while this SIM card is inserted.
Red Pocket tells me that an unlocked phone should work fine with either the "GSMA" or the "GSMT" card. So, their advice, together with the fact that the phone isn't letting me change the APN when on T-Mobile's network, leads me to believe it might not be unlocked. How can I know for sure?
Note: IMEI registers as clean in the database. Also, the IMEI in settings, the one shown by dialing *#06#, and the one on the sticker all match.
Thanks!
Click to expand...
Click to collapse
If it was locked, I don't think it would have accepted the ATT sim at all. You can try playing around with the Device unlock app, but on the first screen it seems to pretty much always claim its locked for me
On my (pretty sure its unlocked, havn't stuck another sim in it almost since I got it months ago)
H918 that's running on a T-Mobile (proper, not mvno) sim I can freely add and switch between APNs
Keep in mind that the H918 isn't going to be good on ATT's network.
Phoenix591 said:
If it was locked, I don't think it would have accepted the ATT sim at all. You can try playing around with the Device unlock app, but on the first screen it seems to pretty much always claim its locked for me
On my (pretty sure its unlocked, havn't stuck another sim in it almost since I got it months ago)
H918 that's running on a T-Mobile (proper, not mvno) sim I can freely add and switch between APNs
Keep in mind that the H918 isn't going to be good on ATT's network.
Click to expand...
Click to collapse
Thanks for the reply. You're saying if it were still locked, it would give an error message with the AT&T SIM?
cyberspectre said:
Thanks for the reply. You're saying if it were still locked, it would give an error message with the AT&T SIM?
Click to expand...
Click to collapse
right, if it were locked, you wouldn't even get 1/30 phone calls to work, you'd get like invalid sim or something. Locked means it wouldn't even try to use the other sim.
Happend to find a video of someone with a simlocked h918 unlocking it, it shows networked locked where the carrier name goes.
Phoenix591 said:
If it was locked, I don't think it would have accepted the ATT sim at all. You can try playing around with the Device unlock app, but on the first screen it seems to pretty much always claim its locked for me
On my (pretty sure its unlocked, havn't stuck another sim in it almost since I got it months ago)
H918 that's running on a T-Mobile (proper, not mvno) sim I can freely add and switch between APNs
Keep in mind that the H918 isn't going to be good on ATT's network.
Click to expand...
Click to collapse
Phoenix591 said:
right, if it were locked, you wouldn't even get 1/30 phone calls to work, you'd get like invalid sim or something. Locked means it wouldn't even try to use the other sim.
Happend to find a video of someone with a simlocked h918 unlocking it, it shows networked locked where the carrier name goes.
Click to expand...
Click to collapse
I'll take your word for it. Time to take off the wrapper! Thanks

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