Note 4 3G/4G not working. - Galaxy Note 4 Q&A, Help & Troubleshooting

Hello everyone,
My T-Mobile Note 4 is not recognizing my sim at all. Hell it isn't even listing any mobile networks when I try to scan for them.
Okay so it is now recognizing the SIM however the 3G/4G are not working. Only edge is working. Any ideas on how to fix that?
I did install a few custom roms in between to test them (MaximumOverDrive, NOBLE ROM) as well as kernals (freeza, Xceed) however I have reinstalled EPE3 stock via Odin now but still mobile data is not working.
Can anyone please tell me what to try/do to fix it?
If you need any more info feel free to ask.
Love,
Becky

Sounds like the SIM reader on your device may have stopped working. I'd take it to a official Samsung Service Center and let them take a look at it.

DarkGuyver said:
Sounds like the SIM reader on your device may have stopped working. I'd take it to a official Samsung Service Center and let them take a look at it.
Click to expand...
Click to collapse
Thanks for the reply bud ^_^
But now sim is getting recognized and 2G and EDGE are working on it. However 3G/4G are not working. I am on stock PE3 any clues on how to get it fixed?
I'll forever be grateful.
Love,
Becky

Becky911 said:
Thanks for the reply bud ^_^
But now sim is getting recognized and 2G and EDGE are working on it. However 3G/4G are not working. I am on stock PE3 any clues on how to get it fixed?
I'll forever be grateful.
Love,
Becky
Click to expand...
Click to collapse
Make sure apn settings are correct if not then make new apn in settings/mobile networks/apn and ad new apn for tmobile manually and save and select apn that you made manually.hope this help.

Becky911 said:
Thanks for the reply bud ^_^
But now sim is getting recognized and 2G and EDGE are working on it. However 3G/4G are not working. I am on stock PE3 any clues on how to get it fixed?
I'll forever be grateful.
Love,
Becky
Click to expand...
Click to collapse
Just take it into your cell providers local high street store. They should be able to restore the APN settings back onto your device, so that you will be able to get 3G and 4G/LTE connectivity.

Related

[Q] Switched to At&t and cant make or receive calls. data works, though

I had to switch from TMobile to At&t for work reasons. I got the Samsung Focus on At&t and I love it, but I flashed Android on my HD2 hoping that I would have the best of both worlds: a WP7 and an Android phone equivalent to the Inspire 4G.
The good news is that when I put my At&t SIM Card on my HD2, it registers and says At&t, and the data works fine (EDGE, but nothing is perfect, i knew that 3G was not going to work because of the different frequencies At&t and TMobile use), the bad news is that I'm not able to make or receive calls or texts.
Anyone has any idea how to make the HD2 with Android work on At&T?
Please ignore the part of my sig where it says that i'm running windows mobile, although i'm willing to flash it if that is the solution, but i want to play with Android for a while.
Any help will be appreciated!
Cheers!
You will have to unlock the phone. Call T_Mobile and they can generate a unlock code for you.
My phone is unlocked... any other ideas?
Did you go to Settings/Mobile Networks/Network Operators/Search Networks and choose AT&T as your carrier? In the same menu, you can Select Automatically so that you don't have to manually choose which carrier is available in your area.
AT&T is the only carrier that shows up whether i select it manually or automatically.
ZaidSenall said:
AT&T is the only carrier that shows up whether i select it manually or automatically.
Click to expand...
Click to collapse
That's strange. Seeing your moniker and knowing you were on T-Mobile, it should also show up. Since your phone is unlocked like mine, I used to be on AT&T and would see both carriers when I did a search of the airwaves. Did you check your APN settings so that they are set up for AT&T?
Here's the link to the ATT APN thread: http://forum.xda-developers.com/showthread.php?t=692059
Hope this works for you.
slbenz said:
That's strange. Seeing your moniker and knowing you were on T-Mobile, it should also show up. Since your phone is unlocked like mine, I used to be on AT&T and would see both carriers when I did a search of the airwaves. Did you check your APN settings so that they are set up for AT&T?
Here's the link to the ATT APN thread: http://forum.xda-developers.com/showthread.php?t=692059
Hope this works for you.
Click to expand...
Click to collapse
I will try this when i get home tonight. I also thought that both of them would show up. but strangely only AT&T shows up. It's weird that data works fine, though...
Thanks for your help. I will post back with the results tonight...
ZaidSenall said:
I will try this when i get home tonight. I also thought that both of them would show up. but strangely only AT&T shows up. It's weird that data works fine, though...
Thanks for your help. I will post back with the results tonight...
Click to expand...
Click to collapse
Nothing worked, so I flashed windows mobile and now everything works fine (except 3g, of course). I guess it is something with Android. I'm sure someone will figure it out...
Thanks for the help, though.
try a different rom. might be the rom you're using... try an unofficial cyanogenmod7 rom and flash with cwm.
Same Problem
I have the same problem with my HD2. It's been flashed to gingerbread 2.3.6 and unlocked. I can get data, but I can't make calls or send texts. I'm wondering if you fixed yours! If so, I'd really appreciate it if you could help me out

[Q] HELP!! No More Network connection or network Samsung Galaxy S4

Hi there,
I have big problem, i think i f#cked up my s4 because of rooting..
Now i can't call anymore, also no internet/data connection no incoming calls.
Now i have a new SIM card but it still doesnt work, my SIM card can not register on the network provider.
So please who can help me with this? I'am now trying for over a week now but still nothing....
Thnx in advance!
First, check your apn. Then provide more info. What firmware are you on? How did you root it,etc.
BG102 said:
Hi there,
I have big problem, i think i f#cked up my s4 because of rooting..
Now i can't call anymore, also no internet/data connection no incoming calls.
Now i have a new SIM card but it still doesnt work, my SIM card can not register on the network provider.
So please who can help me with this? I'am now trying for over a week now but still nothing....
Thnx in advance!
Click to expand...
Click to collapse
rooting will not kill your network connection. that's something that you did. you need to provide a LOT more information in order to have people help you out,
what ROM are you on, what settings did you change, what mobile carrier are you on, etc. etc. this is a simple fix, but we need to know what caused it first. :good:
jakew02 said:
rooting will not kill your network connection. that's something that you did. you need to provide a LOT more information in order to have people help you out,
what ROM are you on, what settings did you change, what mobile carrier are you on, etc. etc. this is a simple fix, but we need to know what caused it first. :good:
Click to expand...
Click to collapse
Sorry guys im kinda n00b in this scene..
But what i know is this:
Android Jellybean 4.3
Mobile provider: Tele2
And mobile settings i didn't change..
I rooted with Odin and CF Root.
Didn't install any other rom or anything.
From one moment in another the network was gone and till today i cant connect to it.
Please help!!
I need my phone for my work...
In settings, wireless and networks, more, Mobil networks, access point names make sure something is checked there.
BG102 said:
Sorry guys im kinda n00b in this scene..
But what i know is this:
Android Jellybean 4.3
Mobile provider: Tele2
And mobile settings i didn't change..
I rooted with Odin and CF Root.
Didn't install any other rom or anything.
From one moment in another the network was gone and till today i cant connect to it.
Please help!!
I need my phone for my work...
Click to expand...
Click to collapse
Try re adding the APNs for your carrier
Sent from my Nexus 5 using Tapatalk
jakew02 said:
Try re adding the APNs for your carrier
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I also tryed that several times but nothing...
The SIM card can not register to my network has it something to do with the imei??
IMEISV: 01
Kernel version: 3.4.0-1715731
[email protected] #1
Buildnumber:
JSS15J.I9505XXUEMI8
Baseband Version:
I9505XXUEMI8
Never give out your imei number
Well the person above me said it. You just made a mountain out of a mole hill by giving out your imei to everyone on xda. Anyway, have you tried a factory reset? If that doesn't work take it to Best Buy and tell them Kies wrecked havoc on your device and they can re-flash your phone for free. Don't tell them it was your fault.
Sent from my SAMSUNG-SGH-I337
ToastyyX said:
Well the person above me said it. You just made a mountain out of a mole hill by giving out your imei to everyone on xda. Anyway, have you tried a factory reset? If that doesn't work take it to Best Buy and tell them Kies wrecked havoc on your device and they can re-flash your phone for free. Don't tell them it was your fault.
Sent from my SAMSUNG-SGH-I337
Click to expand...
Click to collapse
Don't think that's going to work. Going by his baseband he has an i9505.
jd1639 said:
Don't think that's going to work. Going by his baseband he has an i9505.
Click to expand...
Click to collapse
Yes i have an I9505
But is there a solution to fix this???
Please help!!! I'm really sad that this happend.. can do nothing on my phone
BG102 said:
Yes i have an I9505
But is there a solution to fix this???
Please help!!! I'm really sad that this happend.. can do nothing on my phone
Click to expand...
Click to collapse
I don't know what the problem is but you should be able to flash the stock firmware in Odin and get your phone working again. Double check this in the i9500, i9505, i9505G S4 forum. You can get the stock firmware from sammobile.com
jd1639 said:
Don't think that's going to work. Going by his baseband he has an i9505.
Click to expand...
Click to collapse
Samsung can't re-flash his phone??
Sent from my SAMSUNG-SGH-I337
ToastyyX said:
Samsung can't re-flash his phone??
Sent from my SAMSUNG-SGH-I337
Click to expand...
Click to collapse
He should be able to flash it himself. The i9505 is not locked down like the i337. It's an international version so he probably can't take it to best buy, which is what I was responding to.
Sent from my Nexus 5 using xda app-developers app
Oh duh... Have a point there.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
Data enabled, but no internet connection
Hello,
I have the stock rooted i337 (AT&T), running on another provider network. I am aware that i337 is very difficult to do modifications due to the built-in by AT&T vicious locks to prevent using it with other network providers. This is the reason I did not flash ROM, because I am afraid to get my phone bricked and lose it entirely. Recently I subscribed to a data plan from a third party provider and I have 4G in the status line and HSPA in the data type, but I still did not have internet connection when WiFi was disabled, except that my Hotmail somehow worked. No other apps requiring internet worked. I spent a week researching the issue myself as well as working with the provider's tech support, but nothing worked. Two days ago, almost out of despair, I installed a new app called Opera Max, which is developed to route the unencrypted data to their Virtual Private Network in order to compress it and save the data use. As soon as I connected to VPN, all applications started working. I still have to turn Opera Max off when I use WiFi, because it disconnects my WiFi every few minutes, claiming that WiFi signal is too low. (My signal is very strong and no other devices have any issues with WiFi). However, this is a minor problem, considering that Opera Max saved my data plan.
It is still a mystery to me why Hotmail worked, but no other apps and why using Opera Max VPN solved the problem. If anybody has ideas, I will be happy to hear.
I must say that all data settings, including APN are checked, rechecked and correct, so this was not the issue.
Thanks,
Dan
I am also having connection issues after rooting my S4 i9505:
I am on a Telcel (Mexico) which is supposed to support 4G connections... However, ever since I rooted I can only access 2G/GSM networks. I have the official APN network configuration and I have tried two roms but still no luck...
Any advice would be most welcome.

Verizon S8 with tmobile SIM - Cannot run system update

Neither on wifi nor cellular will it check for update. I get the error "sorry, we are having trouble authenticating your device"
Any idea how to fix this ?
wondering the same :/ anyone have anything?
see my post here. besides flashing the t-mobile ummm rom I guess over it, you won't be able to update. I've tried samsung and t-mobile and the only thing that will work besides that is to borrow a sim from a friend and use that... https://forum.xda-developers.com/galaxy-s8/help/best-buy-screw-t3594359/page2
try it today. it should work. the servers were having issues last night and this morning.
lotreaglesfan said:
try it today. it should work. the servers were having issues last night and this morning.
Click to expand...
Click to collapse
will not work because system updates are coming from carrier and having a tmobile sim in a verizon phone means verizon will not allow you to connect to their update server...
insomnia said:
will not work because system updates are coming from carrier and having a tmobile sim in a verizon phone means verizon will not allow you to connect to their update server...
Click to expand...
Click to collapse
Thats not the case. I am using vzw GS8 on att and I receive updates fine
Well I'm confused then. I was able to do the last update with a t-mobile Sim in the phone? Right now when I try checking for updates it errors out saying it couldn't be authenticated. Anyone have any clue?
Hope I can help you!
How to update your system if you're not using the carrier from your S8(+) version.
insomnia said:
Neither on wifi nor cellular will it check for update. I get the error "sorry, we are having trouble authenticating your device"
Any idea how to fix this ?
Click to expand...
Click to collapse
you wont be able to updated through wifi or LTE unless you use a verizon SIM but you can do it easily using your computer and samsung smart switch.
eoga said:
you wont be able to updated through wifi or LTE unless you use a verizon SIM but you can do it easily using your computer and samsung smart switch.
Click to expand...
Click to collapse
Are you able to update using your computer?
insomnia said:
Neither on wifi nor cellular will it check for update. I get the error "sorry, we are having trouble authenticating your device"
Any idea how to fix this ?
Click to expand...
Click to collapse
Try to get at least an inactivated Verizon sim card from any Verizon store or you can also try a normal working Verizon sim. I had AT&T Galaxy S5 and it needed the carrier's sim card to even check for update. I took the sim, put it in, checked for update and was able to install it.
Fix to your issue
Hey guys so I do also share the same situation, I have a Verizon s8+ yet I have T-Mobile One as my coverage
Because it's not authenticated as a Verizon provided account it simply won't update
Now.. the solution to updating isn't directly on your device.
It's within the Samsung Smart switch App for either Mac or windows, you can run an update through there with little to no problems at all and finally keep your device up to date without having to return it for an unlocked one.
Just a brief note regarding the smart switch App, keep in mind that sometimes the update will freeze at a certain percentage on the computer so just be sure to close the app out only if your Samsung device hasn't received the green upload screen yet.
Hopefully this helps out alot of you guys ?
Best regards
lotreaglesfan said:
see my post here. besides flashing the t-mobile ummm rom I guess over it, you won't be able to update. I've tried samsung and t-mobile and the only thing that will work besides that is to borrow a sim from a friend and use that... https://forum.xda-developers.com/galaxy-s8/help/best-buy-screw-t3594359/page2
Click to expand...
Click to collapse
I'd like to flash mine to t mobile, I'm begging you to help me with this!!!
Sent from my SM-G955U using Tapatalk
I've seen a bunch of info on the forums on how to flash the T-Mo ROM on an s8 - as well as flashing the Samsung Unlocked ROM on the s8 but frankly, almost all the threads are from back at the phone launch - and it is unclear to me which roms & programs to search for.
In a similar vein - I'm a noob to the whole process using oden - which I think is what i would need to use. I have experience from years ago running cyanogen mods on a nook tablet and messing with windows phones - but nothing recent and things have changed a lot.
I've read conflicting reports throughout the forums on doing this...
I'm running a VZW Branded (but it's now "unlocked")
Model: s8 SM-G-950U
Build #: NRD90M.G950USQS2BQL1
Baseband #: G950USQS2BQL1
What I'm looking for (really the right word is "NEED"):
Access to lower 700 A block (full band 12 use)
Ability to get OTA Updates
Mobile Hotspot Functionality
WiFi Calling
VoLTE
Bixby
If I could have these all running the Samsung Unlocked ROM - then that would be preferred...
If not - I would want to flash the T-Mobile ROM.
I need to know ASAP as I only have 14days from today (2/14/18) to figure this out or go back to VZW
Many thanks!
~chris

Verizon Essential stuck in 3G after the upgrade

Before I updated via OTA to 8.1 the Essential was connecting to LTE without issue. Since 8,1 I have to connect to CDMA and 3g in order to user my Dialer, otherwise Server Error is generated. No calls in or out.
I wanted to downgrade Yes rebooted, factory reset, etc.
I searched google up and down with no real answers that work. How do I get Sideload working again? It has to be a simple configuration or driver problem I will assume.
Thanks
Im in the same situation you are in also im on 3g at 1.50mbs up & down i have searched every where....
Exxeviant said:
Im in the same situation you are in also im on 3g at 1.50mbs up & down i have searched every where....
Click to expand...
Click to collapse
Here you go
https://forum.xda-developers.com/showpost.php?p=74920423&postcount=506
wolfu11 said:
Here you go
https://forum.xda-developers.com/showpost.php?p=74920423&postcount=506
Click to expand...
Click to collapse
Thanks. Still stuck using 3G. I can connect to 4G/LTE but cannot make phone calls as I still get the Server Error, Try Again.
Bigdny said:
Thanks. Still stuck using 3G. I can connect to 4G/LTE but cannot make phone calls as I still get the Server Error, Try Again.
Click to expand...
Click to collapse
I wrote that post that he referred you to, and while it worked in Oreo 8.0 it does not seem to work in 8.1 for me either.
Try this:
dial *228 and get a PRL update
reboot
*#*#4636#*#* (it may take a few seconds for it to come up if you do it right after a reboot)
set it to LTE/WCDMA
reboot
(you may have to check in mobile network settings that your APN is set to VZWINTERNET)
Let me know how it works out for you. I know that Verizon doesnt support WCDMA, but it forces you over to the Verizon LTE bands which is more or less the goal of this. For some reason this functions differently than any of the other settings that include LTE in them (believe me, I've tried them).
wolfhelm said:
I wrote that post that he referred you to, and while it worked in Oreo 8.0 it does not seem to work in 8.1 for me either.
Try this:
dial *228 and get a PRL update
reboot
*#*#4636#*#* (it may take a few seconds for it to come up if you do it right after a reboot)
set it to LTE/WCDMA
reboot
(you may have to check in mobile network settings that your APN is set to VZWINTERNET)
Let me know how it works out for you. I know that Verizon doesnt support WCDMA, but it forces you over to the Verizon LTE bands which is more or less the goal of this. For some reason this functions differently than any of the other settings that include LTE in them (believe me, I've tried them).
Click to expand...
Click to collapse
Well I reset my PRL via *228 and sure enough selecting 4G/LTE does put us at LTE/wcdma but my phone functions perfectly. I do notice the menus are changed and I got a couple other options though now. See attached
wolfu11 said:
Well I reset my PRL via *228 and sure enough selecting 4G/LTE does put us at LTE/wcdma but my phone functions perfectly. I do notice the menus are changed and I got a couple other options though now. See attached
Click to expand...
Click to collapse
Yep those are how the menu should look for a device that's not locked to sprint. It seems to me there are some firmware files that prefer sprint in these beta builds, because even on other carriers (and more than one person has said this) you can see 'sprint' pop up in the bar or in the settings even when you arent on sprint.
Interesting that yours gives you the option of 'wifi calling provisioned', I cant get that to not be greyed out on mine.
wolfhelm said:
Yep those are how the menu should look for a device that's not locked to sprint. It seems to me there are some firmware files that prefer sprint in these beta builds, because even on other carriers (and more than one person has said this) you can see 'sprint' pop up in the bar or in the settings even when you arent on sprint.
Interesting that yours gives you the option of 'wifi calling provisioned', I cant get that to not be greyed out on mine.
Click to expand...
Click to collapse
Yeah I've screwed with this phone so much I don't know what I did LOL but now it shows wifi calling even in dialer. I'm not sure if it really works cuz I have a good signal so it never switches. My e911 address is set up from my Moto z and I do have a wear24 watch tied to this phone not sure if that's what triggered it. ? I did get a new SIM card on Monday as well because I was fighting with the vzw crap so I don't know exactly what triggered the WiFi calling.
wolfhelm said:
I wrote that post that he referred you to, and while it worked in Oreo 8.0 it does not seem to work in 8.1 for me either.
Try this:
dial *228 and get a PRL update
reboot
*#*#4636#*#* (it may take a few seconds for it to come up if you do it right after a reboot)
set it to LTE/WCDMA
reboot
(you may have to check in mobile network settings that your APN is set to VZWINTERNET)
Let me know how it works out for you. I know that Verizon doesnt support WCDMA, but it forces you over to the Verizon LTE bands which is more or less the goal of this. For some reason this functions differently than any of the other settings that include LTE in them (believe me, I've tried them).
Click to expand...
Click to collapse
Thank you for the steps but still cannot use 4G for phone calls, but it does work for internet, facebook, email,etc.
Have to go back to 3G for phone calls.
Very interesting why it happening and not widespread. No special configurations or setups on my phone.
Bigdny said:
Thank you for the steps but still cannot use 4G for phone calls, but it does work for internet, facebook, email,etc.
Have to go back to 3G for phone calls.
Very interesting why it happening and not widespread. No special configurations or setups on my phone.
Click to expand...
Click to collapse
Are you on 8.0 or 8.1?
wolfhelm said:
Are you on 8.0 or 8.1?
Click to expand...
Click to collapse
I upgraded to 8.1 via OTA. No root, no rom.
Bigdny said:
I upgraded to 8.1 via OTA. No root, no rom.
Click to expand...
Click to collapse
That's where I'm at too... the one thing that might be different about this is I tried my old steps first before figuring out how to get it to work with these new ones... seems like a lot of effort, but it might be what is needed (or some amount of it) to get it all working. So try going through the old ones before the new ones (you probably dont need to *228 again since you just did)
My old steps linked here (these worked in 8.0, if they work for you in 8.1, more power to you, but they dont work for me):
https://forum.xda-developers.com/showpost.php?p=74920423&postcount=506
I'm still routinely messing with it because I feel like the setting I have now prevents me from falling back to CDMA if LTE is unavailable for some reason. Fortunately that is a rarity for me... but I maintain that Essential has something in the ROM itself that is preferring sprint and I think it's screwing with us using Verizon.
wolfhelm said:
That's where I'm at too... the one thing that might be different about this is I tried my old steps first before figuring out how to get it to work with these new ones... seems like a lot of effort, but it might be what is needed (or some amount of it) to get it all working. So try going through the old ones before the new ones (you probably dont need to *228 again since you just did)
My old steps linked here (these worked in 8.0, if they work for you in 8.1, more power to you, but they dont work for me):
https://forum.xda-developers.com/showpost.php?p=74920423&postcount=506
I'm still routinely messing with it because I feel like the setting I have now prevents me from falling back to CDMA if LTE is unavailable for some reason. Fortunately that is a rarity for me... but I maintain that Essential has something in the ROM itself that is preferring sprint and I think it's screwing with us using Verizon.
Click to expand...
Click to collapse
There is something there.
I've done that procedure.
If I go into the menu and play around it will try to connect to sprint even with a Verizon SIM. Go figure?
tech_head said:
There is something there.
I've done that procedure.
If I go into the menu and play around it will try to connect to sprint even with a Verizon SIM. Go figure?
Click to expand...
Click to collapse
Exactly. If I leave it on certain settings it'll actually sit there and tell me I'm connected to Sprint.
wolfhelm said:
Exactly. If I leave it on certain settings it'll actually sit there and tell me I'm connected to Sprint.
Click to expand...
Click to collapse
I just reported this to Essential in their beta feedback.
Others should report their similar issues.
It seems to be associated with them making a unified release.
If you look at some releases they are specifically for Sprint or Not.
tech_head said:
I just reported this to Essential in their beta feedback.
Others should report their similar issues.
It seems to be associated with them making a unified release.
If you look at some releases they are specifically for Sprint or Not.
Click to expand...
Click to collapse
That's a good point, I have reported as well.
tech_head said:
I just reported this to Essential in their beta feedback.
Others should report their similar issues.
It seems to be associated with them making a unified release.
If you look at some releases they are specifically for Sprint or Not.
Click to expand...
Click to collapse
Doing the same right now. Just glad Im not the only one having the problem.
Bigdny said:
Thank you for the steps but still cannot use 4G for phone calls, but it does work for internet, facebook, email,etc.
Have to go back to 3G for phone calls.
Very interesting why it happening and not widespread. No special configurations or setups on my phone.
Click to expand...
Click to collapse
Try turning off Enchanted 4G LTE Mode. It's possible going to 8.1 just reset this setting to on. This should only be on if you have HD Voice enabled on your line on Verizon (you'll have to call Verizon to enable it, it's a free feature).
This should fix server error on 4G, randomly connecting to Sprint is a separate issue.
UPDATE Now working
Took the advice from someone on Reddit who had the same problem. Ran to VZW store and received a new SIM. Without any programming on my end or reboot, back to LTE without issue. FINALLY. As soon as the rep popped in the SIM the essential connected on its own.
Bigdny said:
Took the advice from someone on Reddit who had the same problem. Ran to VZW store and received a new SIM. Without any programming on my end or reboot, back to LTE without issue. FINALLY. As soon as the rep popped in the SIM the essential connected on its own.
Click to expand...
Click to collapse
Just wanted to second this post that a new sim card is the key to solving this issue. In my case, I was using Red Pocket CDMA (VZW network), and I ran into the same problem. Red Pocket rep explained to me that my sim got provisioned to 3g only and that I needed a new sim to connect to LTE. As soon as we switched to a new sim, I got LTE. I hope this helps others.

LG G6 Mobile data issue

Hello All.
This may sound like an easy problem to solve and a part of me hopes it is. but im fairly well versed in android and has me baffled.
Phone runs beautifully 870DS. When i leave WiFi, the swith to mobile data takes for ever and then remains super fickle and intermittent. I sometimes do not have any data moving whatsoever (offline dinosaur in chrome level) When i connect to wifi again, all is fine, instantly.
I have full signal (full bars).
Mobile data on.
Switch to mobile data on.
The correct network registered & the correct APN for that network is set.
I have it set to GSM/WCDMA/ LTE auto
I have tried setting RAT set to every possible combo and it still continues!
I read somewhere it could be caused by radio initiation, so i went in *#*#4636#*#* to run a ping test but "phone information" throws up an error "This application does not work on this device"
Im 95% certain it is unlocked because i I bought the phone in another country and just popped my new sim straight in without hassle.
The mobile data issues started almost immediately. Now im stumped as what to do.
Any suggestions would be greatly appreciated and rewarded with beer :good:
THANKS!!!
In Developer Options, try switching on the "Agressive WiFi to Cellular Handover" option.
LPMatt said:
In Developer Options, try switching on the "Agressive WiFi to Cellular Handover" option.
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Click to collapse
Thanks. I will try that and trial run it over the next few days. The issue also occurs randomly while out on LTE or 3G. I will take my phone out to check google or whatsapp and nothing will send. So as your suggestion may be a work around, i doubt it will be a solve.
Will let you know how it goes
deathcells said:
Thanks. I will try that and trial run it over the next few days. The issue also occurs randomly while out on LTE or 3G. I will take my phone out to check google or whatsapp and nothing will send. So as your suggestion may be a work around, i doubt it will be a solve.
Will let you know how it goes
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Click to collapse
No change or improvement to the connection
Bump for anymore help from anyone. Please??
Getting desperate here....
deathcells said:
Bump for anymore help from anyone. Please??
Getting desperate here....
Click to expand...
Click to collapse
Does the phone have the right bands for 4G in your country?
Thanks for the reply!
Not sure, how do i check that?
aioan said:
Does the phone have the right bands for 4G in your country?
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Click to collapse
Thanks for the reply!
Not sure, how do i check that?
deathcells said:
Thanks for the reply!
Not sure, how do i check that?
Click to expand...
Click to collapse
go to settings, system, about phone, hardware info and check the model number.
For example I have LG-H870 (European bands, single SIM model).
I see you have dual sim so probably model H870DS and this should have enough bands to work well in Europe and Asia. Check here:
https://www.teamandroid.com/2017/04/15/lg-g6-model-numbers-variants/
aioan said:
go to settings, system, about phone, hardware info and check the model number.
For example I have LG-H870 (European bands, single SIM model).
I see you have dual sim so probably model H870DS and this should have enough bands to work well in Europe and Asia. Check here:
https://www.teamandroid.com/2017/04/15/lg-g6-model-numbers-variants/
Click to expand...
Click to collapse
Thanks for that. Yes according to this https://www.frequencycheck.com/carr...0ds-g6-dual-sim-td-lte/mtn-group-south-africa
I do have the correct bands. Could a carrier lock only one of the slots rendering it single sim in effect? The one sim works perfectly, second sim, no dice
Sorry for bumping an old thread.
Gf is having a similar issue on her phone; long story short, it happens that sometimes, after being connected to Wi-Fi and turing it off, it takes ages for her to get a mobile data connection, despite having full signal.
I had her replace the SIM, as I've seen similar problems (intermittent data connection, phone appears connected but no Internet available, etc.) with a SIM card that was about to go bad; it didn't help. Next step would be a full phone reset.
@deathcells : did you find the cause of your issue?
@fagentu.xda
No unfortunately not. I just deal with it. Extremely frustrating standing in the shop trying to pay without internet...
I tried the settings and force options to no avail.
I tried using both sim cards (from different providers) in both slots for months and no combination ever worked for me. I have yet to figure out if i bought a dudd phone or if a work around exists. Please let me know what you find out! Thanks and best of luck
Have the same issue with mine now. It started to go bad a few weeks ago... Tried everything. Changed SIM card, factory reset, etc... and nothing will change.
I'd say that the phone is just faulty. As I'm still under the warranty I'm in contact with LG to find out about a possible fix or phone replacement. I'll try to keep you posted.
Have you guys find a solution for this? I cant do anything. Does flashing kdz to andriod 9 pie helps?

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