Develop Bugs

[Q] Why can't my GNex connect to T-Mobile 3G?

Hi everyone,
I'm reasonably certain that this isn't a redundant thread -- at least, none of the discussions I've read have helped me fix my problem. Anyway, here goes:
I have a new i9250T that I purchased through Amazon. When I got it, I popped in the SIM card from my Nexus One (both SIM and phone acquired in January 2010). Everything worked fine, EXCEPT that I could only connect to T-Mobile's 2G network (Network Type = Edge:2). After trying everything I could think of, I called T-Mobile, and the tech told me that my 2-year-old SIM card was 2G only and that I should update it. So I went to a T-Mobile store and got a new SIM. Alas, it doesn't seem to have worked.
I would REALLY appreciate any suggestions. Some additional info:
-- I'm in Philadelphia, in a very good coverage area.
-- I flashed yakju, 4.0.2, and UGLC1 radio before getting the new SIM.
Again, any thoughts will be appreciated. I've seen enough posts on various boards from people successfully using this phone on T-Mobile to not give up, but I'm out of ideas.

check what your APN settings are on your N1 and make sure that they ate the same on your GN.
Sent from my Galaxy Nexus using xda premium

Thanks. I'll check that tomorrow morning (I left the N1 at my office).
GreatBigDog said:
check what your APN settings are on your N1 and make sure that they ate the same on your GN.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse

i too received my galaxy nexus today from amazon, i also only seem to be receiving EDGE service. The apn settings were enter automatically from the sim card i assume, and seem to be the same as my old Galaxy S 4g.What else can we try.

cbucha said:
i too received my galaxy nexus today from amazon, i also only seem to be receiving EDGE service. The apn settings were enter automatically from the sim card i assume, and seem to be the same as my old Galaxy S 4g.What else can we try.
Click to expand...
Click to collapse
Weirdest crap... aren't the GNEX suppose to work with either GSM Carriers 3G? From what I read lol ...
- Google Galaxy Nexus

I get 3G/H with my Nexus. Running Android Revolution HD 3.0 w/ franco's kernel. Not sure if I got it before then running stock, though.

It should definitely work no question with little issue. Just pop in your sim and good to go. Maybe its some random network issue in your area that coincidentally started?

Same here, got it on Amazon. it's a GT-I9250T which means it's for the Australian market (I9250 International, I9250M Canada, I9250T Australia). I'm just stuck on EDGE, but works fine on AT&T - I tried it with my gf's sim card.
The problem is with the frequencies. T-mobile uses 1700 and 2100 (both! for upload and download), AT&T uses 1900Hz. The phone is supposed to be a pentaband phone that's able to work on all on the freqs besides others (850, 900). So my guess after a few days research is that it's limited in the software. Still researching the solution...
Let's keep each other posted on this, i'm eager to get my 4G back !!!
NEW DEVELOPMENT!!!
Information from another post: flashing UGLC1 radio helps. Good luck all

I had the same issues with no 3g speeds on any radios except a random docomo radio until today.
Based on a few posts in the baseband thread i tried the settings in the hidden menu
Go into the phone dialer and type
*#*#4636#*#* -This should bring up a testing menu
Go into phone info, then pull up the settings menu
There should be a select radio band button
Try the USA band, if that doesn't work, try automatic.
This worked for me, I've since flashed 4 different radios that hadn't worked previously and now do at standard speeds vs edge only.

Well my buddy bought his also from amazon and had the same issue as the OP. But luckily we got it fixed. I believe what he did was only tinker with the APN settings. Under APN Type in your T Mobile apn make sure the correct profiles are there. One of them could be data but I'm not sure as I'm on SIMPLE Mobile and my buddy is on T Mobile, sorry. If you get it working and your MMS isn't working, then add mms to the profile as well. That should do it. He did get his phone with 4.0.1 and I updated it to 4.0.4 Android Revolution 3.0 just like me as well but it wasn't until we tinkered with his settings did it work. Oh and we also swapped for a new SIM. Let me know if this helped guys. I'll try getting his settings if I see him tomorrow.
Edit: his was also an Australian galaxy nexus. But he seems be having everything working now
Sent from my Galaxy Nexus using XDA

So ait this is the Australian version? They use 850 and 2100 bands so is it possible the other bands are disabled on that version?

Problem solved!
I took chimaki1's advice and fiddled with the radio band setting. I had done this previously, but I had always selected "USA Band." This time, I selected "Automatic." Closed out of the Testing menu, and -- bingo! The wonderful 'H' appeared and I was now getting real speed -- 7.9mbps down, 2.8 up. Not as good as some of the insane speeds I've seen posted by GN owners on T-Mobile, but a lot better than 100kbps down I had been getting. Also, I didn't mess with the APN settings at all.
To recap the solution for others having the same issue:
From the phone dialer, enter *#*#4636#*#*
Tap "Phone information"
Tap the Settings icon at the bottom right
Tap "Select radio band"
Select "Automatic"
Close out of the Testing menu (you can just hit the Home key)
I can't remember whether I had to soft reset or not; I don't think I did.
I hope this works for others. Thanks very much to everyone who posted.
Craig

CraigJoseph said:
I took chimaki1's advice and fiddled with the radio band setting. I had done this previously, but I had always selected "USA Band." This time, I selected "Automatic." Closed out of the Testing menu, and -- bingo! The wonderful 'H' appeared and I was now getting real speed -- 7.9mbps down, 2.8 up. Not as good as some of the insane speeds I've seen posted by GN owners on T-Mobile, but a lot better than 100kbps down I had been getting. Also, I didn't mess with the APN settings at all.
To recap the solution for others having the same issue:
From the phone dialer, enter *#*#4636#*#*
Tap "Phone information"
Tap the Settings icon at the bottom right
Tap "Select radio band"
Select "Automatic"
Close out of the Testing menu (you can just hit the Home key)
I can't remember whether I had to soft reset or not; I don't think I did.
I hope this works for others. Thanks very much to everyone who posted.
Craig
Click to expand...
Click to collapse
This is weird. my galaxy is still not getting 3G/4G Service even after changing radio band in the hidden test menu.
Is your galaxy running the stock software, or are you running something different. if so, what rom are you running

It's running the yakju image and OS version 4.0.2. I flashed both using the WugFresh tool. The phone came with yakjuxw (I think) and 4.0.1.

RogerPodacter said:
So ait this is the Australian version? They use 850 and 2100 bands so is it possible the other bands are disabled on that version?
Click to expand...
Click to collapse
Not "disabled" but more like they're set up to "prefer" the Australian bands.

I'm having the same issue on the I9250T I just got. Stuck on edge. I played around with the hidden menu settings, still no luck. I'm using a TMo SIM card from my previous phone which had 4G so I doubt that its a time/patience issue. Any help will be appreciated.

chimaki1 said:
I had the same issues with no 3g speeds on any radios except a random docomo radio until today.
Based on a few posts in the baseband thread i tried the settings in the hidden menu
Go into the phone dialer and type
*#*#4636#*#* -This should bring up a testing menu
Go into phone info, then pull up the settings menu
There should be a select radio band button
Try the USA band, if that doesn't work, try automatic.
This worked for me, I've since flashed 4 different radios that hadn't worked previously and now do at standard speeds vs edge only.
Click to expand...
Click to collapse
My phone has had "H"/4G access since day one, if I put it on US-Band I only get Edge. I put it on AUTOMATIC and it works fine, leave it on AUTOMATIC.

Today I tried a friend's ATT SIM and it worked fine with H/3G speeds. popped the TMo SIM back in and I'm back to EDGE. Wondering if there is something that needs to be done to the phone settings or, or I was hopping some one could tell me what needs to be done.. thanks

[Q] LTE Bell dies if using other roms?

I'm just wondering if anyone else has noticed this and this only happens after a period of time where the LTE will just stop working but if you switch to CDMA it's working fine?
To go a step further I've wiped the phone and restored to stock. Once that's done LTE is working fine.
To go further again, I grabbed a different ROM and the exact samething happens, I'll be able to be on LTE for about a day and then the service stops and if I switch it to CDMA I'm good.
Just wondering if anyone else here has noticed that.
Cheers,

did you verify your APN settings?
i'm using a Bell version GN2 but on Fido and i can flash all day everyday and 4g has always worked.

SeraldoBabalu said:
did you verify your APN settings?
i'm using a Bell version GN2 but on Fido and i can flash all day everyday and 4g has always worked.
Click to expand...
Click to collapse
The APN settings are always the same with Bell. They don't change.
HSPA+ will work but LTE will die after a little while. (This only occurs on other ROMS). If I stay on the stock rom there's no problem.

fluxgfx said:
The APN settings are always the same with Bell. They don't change.
HSPA+ will work but LTE will die after a little while. (This only occurs on other ROMS). If I stay on the stock rom there's no problem.
Click to expand...
Click to collapse
On a different note... I noted that if I have SAMBA Fileshare on I have strange things that happens DATA wise.... I'm still looking into it and dropping logcat and looking at different possibility.
At this point it's looking like something with the SMB Fileserver I have on the phone. (Will know later on)

fluxgfx said:
The APN settings are always the same with Bell. They don't change.
HSPA+ will work but LTE will die after a little while. (This only occurs on other ROMS). If I stay on the stock rom there's no problem.
Click to expand...
Click to collapse
im not saying the bell apn has changed but ive found that sometimes when flashing roms, the apn settings arent included in the rom and have to manually be entered.
This happened alot when using my galaxy s2 lte.
Sent from my Samsung Galaxy Note II

Radio issues AGAIN!!!

Hi all, ever since stock went to JB 4.1, I can not get phone to work on any Rom. Any ROM I flash, many and all radio flash and kernel flash. No matter what, I can not get phone to work on any Rom, except stock rooted Roms. I have T-Mobile SGH-T989 SG2! I wiped everything, tried touch and non touch CWM and just can't get phone to work. I tried every radio that is posted and read all radio issue threads. I even started from a fresh Odin stock flash with wiping everything on phone and sd card as well as external format. All roms that I flash work, but cant not connect to T-Mobile! I even manually applied APN's. Some Roms will detect T-Mobile and it won't connect. Keep getting AT&T, but won't register. This is the second thread I started, but with only one response for help that I tried. PLEASE, anyone with some advice, Thanks!

flash the new uvmc6 radi and you should be good to go or if the new tel us one if your in canada

JesusWazBlack said:
flash the new uvmc6 radi and you should be good to go or if the new tel us one if your in canada
Click to expand...
Click to collapse
Tried that, Like I said: "Tried ALL radios", thx anyway!

It might be your sim card then. Try and get a new one or if its not that it could be a hardware issue

JesusWazBlack said:
It might be your sim card then. Try and get a new one or if its not that it could be a hardware issue
Click to expand...
Click to collapse
Doubt it is Sim card, phone works fine on stock JB (Rooted). Thx!

Try Network app from Market, and select GSM Auto (Prl).
Or go to settings, more, mobile networks and network mode and select GSM/WCDMA preferred.
Or go to EDGE / 2G only as a test.
In CM 10.1 and SlimBeam weeklies which I use, it seems to default to LTE/WCDMA. Since our phone does not have LTE, and very few T-mo markets have LTE, I found in some areas it would not register on the network at all until I changed the network preferences to one of the above because I presume the phone is trying LTE when the S2 doesn't have LTE. Also check your APN's? Just some suggestions.

You need a new phone perhaps then.
Seriously, with the new radio for T-Mobile or Telus, which are the only ones that work on all current roms (any others you've tried has been wasted time), and the correct apn settings, you shouldn't be having issues. Triple check radio is correct and apn.
You say your sim is fine.
So everything seems to be ruled out. And other than radio and apn, it can't be any settings, not after a clean install.
Phone busted is all that's left. Simple process of elimination. Well....if it somehow works on stock, but nothing else....then I guess your stuck with stock.
Thx.
P.s. getting snarky with people trying to help will certainly make most people, who may have ideas, just close the thread instead of trying to help.
Sent from my cell phone telephone.

kj2112 said:
You need a new phone perhaps then.
Seriously, with the new radio for T-Mobile or Telus, which are the only ones that work on all current roms (any others you've tried has been wasted time), and the correct apn settings, you shouldn't be having issues. Triple check radio is correct and apn.
You say your sim is fine.
So everything seems to be ruled out. And other than radio and apn, it can't be any settings, not after a clean install.
Phone busted is all that's left. Simple process of elimination. Well....if it somehow works on stock, but nothing else....then I guess your stuck with stock.
Thx.
P.s. getting snarky with people trying to help will certainly make most people, who may have ideas, just close the thread instead of trying to help.
Sent from my cell phone telephone.
Click to expand...
Click to collapse
What are you talking about, I thanked everyone who helped me here on this thread, how do you mean being snarky. I never was...whatever that means "Snarky" I just explained all I did and thanked all who helped me, so don't flame me, if that it what your doing!

LBN1 said:
Try Network app from Market, and select GSM Auto (Prl).
Or go to settings, more, mobile networks and network mode and select GSM/WCDMA preferred.
Or go to EDGE / 2G only as a test.
In CM 10.1 and SlimBeam weeklies which I use, it seems to default to LTE/WCDMA. Since our phone does not have LTE, and very few T-mo markets have LTE, I found in some areas it would not register on the network at all until I changed the network preferences to one of the above because I presume the phone is trying LTE when the S2 doesn't have LTE. Also check your APN's? Just some suggestions.
Click to expand...
Click to collapse
Thanks, I will try that!

[Q] TMO GS4 Network Modes on AT&T Network

So I recently got a T-Mobile GS4 for use on AT&T. I have set up the APNs, etc. and everything seems to be working, except for one annoying thing:
The device seems to be reverting it's Network Mode to WCDMA preferred instead of LTE/GSM Auto. I have tried setting this in Settings as well as in the Testing mode menu and it will not stick.
This happens every time the phone is booted, as well as when a call is made. When the phone is booted, it takes a long time to connect to the network, and when it finally does it is set to WCDMA preferred. I can then change it manually to be LTE/GSM auto.
When I make a call, the network drops from LTE to H/H+ as expected. However, after the call is completed, the network connection drops entirely and reconnects a short time thereafter but on WCDMA preferred.
Has anyone else experienced this issue, or have any ideas? If it makes any difference, I am running the latest CM10.2 for jfltetmo, without any other modifications.
Thanks in advance!
EDIT: I should add that the IMEI on file with AT&T is indeed for an AT&T LTE phone.

re: LTE/GSM
flinttownbrown said:
So I recently got a T-Mobile GS4 for use on AT&T. I have set up the APNs, etc. and everything seems to be working, except for one annoying thing:
The device seems to be reverting it's Network Mode to WCDMA preferred instead of LTE/GSM Auto. I have tried setting this in Settings as well as in the Testing mode menu and it will not stick.
This happens every time the phone is booted, as well as when a call is made. When the phone is booted, it takes a long time to connect to the network, and when it finally does it is set to WCDMA preferred. I can then change it manually to be LTE/GSM auto.
When I make a call, the network drops from LTE to H/H+ as expected. However, after the call is completed, the network connection drops entirely and reconnects a short time thereafter but on WCDMA preferred.
Has anyone else experienced this issue, or have any ideas? If it makes any difference, I am running the latest CM10.2 for jfltetmo, without any other modifications.
Thanks in advance!
EDIT: I should add that the IMEI on file with AT&T is indeed for an AT&T LTE phone.
Click to expand...
Click to collapse
What I would do to solve this problem is to first go into recovery and make a nandroid backup.
The problem you are having is due to the fact that you are running CM10.2 rom which perhaps
is not 100% compatible with your specific phone and or carrier.
What you need to do is to flash an AT&T custom rom OR better yet flash Darthstalker's
AROMA Multi-Carrier rom and select AT&T after the rom starts flashing.
That way it will not only flash a proper AT&T rom but it will also flash the
proper kernel which you need if you want to use it on AT&T as well as
setting it up with the correct APN's which will stick.
The Darthstalker rom can be found here: http://forum.xda-developers.com/showthread.php?t=2292054
This rom has a lot of extra features, settings and options making it one of the best roms around
especially for someone like you who wants to use a tmobile phone on the AT&T network.
Give it a try, I am certain it would perform really well for you without any issues.
Good luck!

Thanks for the info. Looks like that is a TouchWiz ROM though... I'm looking for an AOSP one... Will look more
Sent from my Nexus 7 using XDA Premium HD app

Misterjunky said:
What I would do to solve this problem is to first go into recovery and make a nandroid backup.
The problem you are having is due to the fact that you are running CM10.2 rom which perhaps
is not 100% compatible with your specific phone and or carrier.
What you need to do is to flash an AT&T custom rom OR better yet flash Darthstalker's
AROMA Multi-Carrier rom and select AT&T after the rom starts flashing.
That way it will not only flash a proper AT&T rom but it will also flash the
proper kernel which you need if you want to use it on AT&T as well as
setting it up with the correct APN's which will stick.
The Darthstalker rom can be found here: http://forum.xda-developers.com/showthread.php?t=2292054
This rom has a lot of extra features, settings and options making it one of the best roms around
especially for someone like you who wants to use a tmobile phone on the AT&T network.
Give it a try, I am certain it would perform really well for you without any issues.
Good luck!
Click to expand...
Click to collapse
On second thought it would be a good idea to try this to see if the problem is eliminated. In the meantime, do you know of any AOSP ROMs that might have the same type of solution?
Sent from my SGH-M919 using XDA Premium HD app

I'm on slimbean ROM and works great plus I also have a T-Mobile S4 on at&t and never had an issue like that and you could try to flash the ATT_CSC_fixer2-1.zip
Sent from my SGH-M919 using XDA Premium 4 mobile app

I've had my T-Mobile GS4 on ATT for a few months now and have had no problem with LTE after they had my phone's IMEI, and I was using the correct APN. This is the case on many TW and AOSP ROMs that I've tried. Good luck!
Sent from my SGH-M919 using Tapatalk

same here i have an m919 rooted stock mdl rom on at&T and have no such issue mine stays on lte.. both with phone or pta ap.. Have you tried reflashing and factory reset before setting stuff up...

Thanks to everybody for the info. I finally got it working:
I first backed up to the Touchwiz ROM mentioned and made sure data was working. Here I had to manually add the APN and then the settings stuck after reboot, calls, etc.
Then, I reinstalled CM 10.2 for jfltetmo. Magically, the setting is now sticky.
Thinking about it, I got the phone, unlocked it, and immediately installed CM without attempting to use the ATT sim card at all. Perhaps TW does something to make this stick, but I have no idea.
Sent from my SGH-M919 using XDA Premium HD app

SOS. my phone stuck on EDGE

Since i changed a new rom(cm11) for my unlocked i747, I could not receive any hspa+ internet(I am using h2o). at the begining, i thought it was because of the lost imei, so i fixed it, but it was not working. then i opened *#*#4636#*#*, and selected wcdma perfered, it changed to h+, but about 1 min later, it turned back to Edge. if i select wcdma only, I can use h+ 1min and then no more signal even edge. also cannot make phone call and texting. i dont know why. the APN setting is right. and anyone tells me what should I do. thanks very much!

Try flashing your stock firmware your modems might be screwed up
Sent from my ATT Samsung Galaxy SIII using TapaTalk

crazymonkey05 said:
Try flashing your stock firmware your modems might be screwed up
Sent from my ATT Samsung Galaxy SIII using TapaTalk
Click to expand...
Click to collapse
i had tried some other rom. i even regressed it to the originally official rom. it was will EDGE. I wonder the possibility is that some important files has lost. but i didnt find any solutions.

These seem like pretty routine questions but have you checked to see if another phone has the same reception problems?
Sent from my ATT Samsung Galaxy SIII using TapaTalk

BlakeGuo said:
Since i changed a new rom(cm11) for my unlocked i747, I could not receive any hspa+ internet(I am using h2o). at the begining, i thought it was because of the lost imei, so i fixed it, but it was not working. then i opened *#*#4636#*#*, and selected wcdma perfered, it changed to h+, but about 1 min later, it turned back to Edge. if i select wcdma only, I can use h+ 1min and then no more signal even edge. also cannot make phone call and texting. i dont know why. the APN setting is right. and anyone tells me what should I do. thanks very much!
Click to expand...
Click to collapse
Try google ... peoplearmy LTE restore IMEI .... to get your LTE back. Let me know if you cannot find the link.
Good luck

LARMYV said:
Try google ... peoplearmy LTE restore IMEI .... to get your LTE back. Let me know if you cannot find the link.
Good luck
Click to expand...
Click to collapse
I had fixed the IMEI, the number is exactly. but still not working on H+ internet.