Develop Bugs

Being crazy with network issues

Hi guys,
I usually don't create topics because there is already a lot of solutions to my problems if I search well, but this time I'm really stuck since 10 days, I don't know if it's a hardware problem.
I bought my galaxy nexus GSM version in January, I leave in Frane, I had some randoms data drops (1 per day) but I just needed to toggle airplane mode to get it back.
I never unlocked or rooted my phone (since the problem)
Here is what's happening. My phone only get network when I'm home. I turned off the wifi on my nexus, still have network, unplug my internet box, still have network.
So I go for a walk to see if it's still work, I just need to go downstairs and my phone loose the network. Impossible to call or be called. Toggling airplane mode do nothing. I tried to put another sim card (in fact 3 differents sim card from different mobile provider), not working. When I go back home, reboot nexus, everything works fini. I'm trying everyday to understand why my phone only works at my home.
Baseband : I9250XXLA2
Android : 4.0.4 IMM76I
Kernel : 3.0.8 franco kernel Milestone 4
What i did :
Reboot phone and take off battery/sim when the network is lost.
Bought another sim card
Rooted my phone and instal rom (AOKP Build 39, APEX)
Flash kernel (Franco kernel milestone 4, Fugu mod)
Flash baseband (XXKL1)
Changed ril with getRIL
Factory reset, wipe cache/data, wipe dalvik cache
I swear my phone is not fallen on the floor and did nothing wrong to get this problem
My nexus is going for warranty on Wednesday. If you guys have any ideas, or anything I did not already tried, do not hesitate!
Thanks!

Hello,
I have different problem. My Gnex is suffering random signal drops when my phone is on 3g network. On 2g network everything is fine.
Like you, I tried a lot of thing. Root, flash different roms, kernels, radios. Download getril, matched radio etc. Also tried to unroot and flash 4.0.2 stock rom. Nothing changed. Today, I went to Samsung service a they flashed new Samsung kernel... still the same.
So please, someone help us about problems that we suffer.
Thanks.
Sent from my Galaxy Nexus using xda app-developers app

[Q] {10-25-2012}{Rom}{ICS} Official Global CM9

* Unfortunately, I'm having the same problems with this ROM on HSDPA that I was having on aeroevan's ROM. GSM is found immediately on boot, however, HSDPA is very flakey. It will succeed in connecting every now and again, but then randomly drops the signal and won't reconnect. I thought maybe I just had a weak 3G signal where I was testing, but I have a BB Bold for work as well and that can easily maintain a 3G connection on the same network. I also had no problem way back in the day with CM7.2, but that ship has sailed .
Also, when the phone is in WCDMA preferred mode, after a while the phone will lose all connections (usually after a reboot but not always), including to GSM and when I go to reselect my network operator I get the message "Error while searching for networks". No matter how many times I reboot the phone or switch to "GSM Only" or "GSM/WCDMA auto" it never lets me again select my network provider.
As I said, I ran into the same problems with aero's port, so its not specific to this ROM.
* Situation are me after uproom (http://forum.xda-developers.com/showthread.php?t=1932573), spent two days lost wave, down to the original room (fullwipe finished down about 2.3.4). So lose the 3G network always in global mode (global), 3G users they will never be, but 2G ok (you spend vina sim and have installed APV vina). The physician who has experience helping hand factories. Thank a lot.

I don't known?
I do not understand.Specific guidance for me? please!

nabin229 said:
I do not understand.Specific guidance for me? please!
Click to expand...
Click to collapse
Aeroevan's rom? CM9, CM10? Is your radio outdated? What carrier are you on? More info = more help.
nabin229 said:
Situation are me after uproom (http://forum.xda-developers.com/show....php?t=1932573), spent two days lost wave, down to the original room (fullwipe finished down about 2.3.4). So lose the 3G network always in global mode (global), 3G users they will never be, but 2G ok (you spend vina sim and have installed APV vina). The physician who has experience helping hand factories. Thank a lot.
Click to expand...
Click to collapse
BTW, I don't understand this part.
I would suggest reading through the entire thread of Aeroevan's rom that you were describing as well as the Global CM9 thread. During your reading you may find and answer in there. I have found more answers that way than waiting on someone to direct me there anyway. That is all the advice I can provide with my limited knowledge.

Help me
ThePhantom97 said:
Aeroevan's rom? CM9, CM10? Is your radio outdated? What carrier are you on? More info = more help.
BTW, I don't understand this part.
I would suggest reading through the entire thread of Aeroevan's rom that you were describing as well as the Global CM9 thread. During your reading you may find and answer in there. I have found more answers that way than waiting on someone to direct me there anyway. That is all the advice I can provide with my limited knowledge.
Click to expand...
Click to collapse
I installed your room ( {Rom}{ICS} Official Global CM9), after 2 days my phone is not network. I reinstall the original room 2.3.4 but only use 2G when I used dataroaming; completely unusable 3G & network global mode always (I fullwipe data before reinstalling room 2.3.4 & APN properly installed).I then set your room again, but as I said above condition.Please help me how to be able to use 3G
because my phone is example:
Unfortunately, I'm having the same problems with this ROM on HSDPA that I was having on aeroevan's ROM. GSM is found immediately on boot, however, HSDPA is very flakey. It will succeed in connecting every now and again, but then randomly drops the signal and won't reconnect. I thought maybe I just had a weak 3G signal where I was testing, but I have a BB Bold for work as well and that can easily maintain a 3G connection on the same network. I also had no problem way back in the day with CM7.2, but that ship has sailed .
Also, when the phone is in WCDMA preferred mode, after a while the phone will lose all connections (usually after a reboot but not always), including to GSM and when I go to reselect my network operator I get the message "Error while searching for networks". No matter how many times I reboot the phone or switch to "GSM Only" or "GSM/WCDMA auto" it never lets me again select my network provider.

Ok, I don't know if anyone else is having the same problem as you. I hope I don't offend you but I am going to take a guess and say that english is not your first language as some of that is difficult for me to read and completely understand. From what I am gathering is you can connect to your carriers network but only on a temporary basis. Here are the steps I followed to connect to Verizon's network using {10-25-2012}{Rom}{ICS} Official Global CM9 - After a full wipe and clean install and after initial setup I went to (doing this from memory as I don't have it installed at the moment) Settings --> More --> Mobile Networks --> chose CDMA w/EVDO --> Exit out of settings and rebooted. When the phone booted up it recognized the Verizon network and all service and data was all working, I didn't have to change the APN settings at all. If you are still having trouble staying connected I suggest you check the version of radio you are using and consider updating it. Here is the radio thread: http://forum.xda-developers.com/showthread.php?t=1134451 I don't think I am the best person to assist you but just telling you what I would do if I were in your situation.

3G disconnect, only use 2G (GSM). Help me!
ThePhantom97 said:
Ok, I don't know if anyone else is having the same problem as you. I hope I don't offend you but I am going to take a guess and say that english is not your first language as some of that is difficult for me to read and completely understand. From what I am gathering is you can connect to your carriers network but only on a temporary basis. Here are the steps I followed to connect to Verizon's network using {10-25-2012}{Rom}{ICS} Official Global CM9 - After a full wipe and clean install and after initial setup I went to (doing this from memory as I don't have it installed at the moment) Settings --> More --> Mobile Networks --> chose CDMA w/EVDO --> Exit out of settings and rebooted. When the phone booted up it recognized the Verizon network and all service and data was all working, I didn't have to change the APN settings at all. If you are still having trouble staying connected I suggest you check the version of radio you are using and consider updating it. Here is the radio thread: http://forum.xda-developers.com/showthread.php?t=1134451 I don't think I am the best person to assist you but just telling you what I would do if I were in your situation.
Click to expand...
Click to collapse
my phone 3G is disconnect, only use 2G (GSM) , rom 2.3.4 Verizon, radio 1.09.01.0312. *I'm from Vietnam, I speak English not good, sorry.

nabin229 said:
my phone 3G is disconnect, only use 2G (GSM) , rom 2.3.4 Verizon, radio 1.09.01.0312. *I'm from Vietnam, I speak English not good, sorry.
Click to expand...
Click to collapse
No need to apologize m8. Hopefully someone more advanced than myself can assist you with your issue. I am sorry that I couldn't be of more assistance.

Trouble with wifi/3G
ThePhantom97 said:
Ok, I don't know if anyone else is having the same problem as you. I hope I don't offend you but I am going to take a guess and say that english is not your first language as some of that is difficult for me to read and completely understand. From what I am gathering is you can connect to your carriers network but only on a temporary basis. Here are the steps I followed to connect to Verizon's network using {10-25-2012}{Rom}{ICS} Official Global CM9 - After a full wipe and clean install and after initial setup I went to (doing this from memory as I don't have it installed at the moment) Settings --> More --> Mobile Networks --> chose CDMA w/EVDO --> Exit out of settings and rebooted. When the phone booted up it recognized the Verizon network and all service and data was all working, I didn't have to change the APN settings at all. If you are still having trouble staying connected I suggest you check the version of radio you are using and consider updating it. Here is the radio thread: http://forum.xda-developers.com/showthread.php?t=1134451 I don't think I am the best person to assist you but just telling you what I would do if I were in your situation.
Click to expand...
Click to collapse
I have been having the same problem. Flashed CM10 after full wipe, mobile network (for verizon) is CDMA w/EVDO, tried rebooting and switching and wiping and re-flashing but I have no wifi and bad 3G. When I revert to stock everything is fine. How can I fine the latest radio for CM10, I didn't see any JB in the thread link.

SS823 said:
I have been having the same problem. Flashed CM10 after full wipe, mobile network (for verizon) is CDMA w/EVDO, tried rebooting and switching and wiping and re-flashing but I have no wifi and bad 3G. When I revert to stock everything is fine. How can I fine the latest radio for CM10, I didn't see any JB in the thread link.
Click to expand...
Click to collapse
The latest is the ICS radio .320 it will work on JB roms as well.

Have you guys flashed the new ics firmware?
I'm so fresh you can suck my nits...

[Q] Bad network connection after upgrading to CM 10.2

Hey guys,
I recently upgraded my Rogers Galaxy S3 d2att from CM10.1 Nightly 02/12 to CM 10.2 and have no longer been able to get the usual H+ connection. I now have either no letter or an E beside the signal bar. I did the following:
Dirty Flash 10.2 through Recovery Menu
Delete cache, dalvik and data in recovery menu
Couldn't get 3G, 4G or H+ Connection so I dirty flashed 10.1
Installed latest d2att rogers modem, installed latest bootloader, neither worked
Flashed back to CM10.1 Nightly
Can't get previous H+ connection on CM10.1 Nightly
I'm getting the worst headache trying to solve this. I'm more than willing to revert back to stock to try and get this working properly.
Thanks!
UPDATE:
I found out my IMEI was deleted while flashing. Does anybody know how I would get this back?

First off, how did you get cm 10.2
Cerhio;4409stock said:
[*]Dirty Flash 10.2 through Recovery Menu
[*]Delete cache, dalvik and data in recovery menu
[*]Couldn't get 3G, 4G or H+ Connection so I dirty flashed 10.1
[*]Installed latest d2att rogers modem, installed latest bootloader, neither worked
[*]Flashed back to CM10.1 Nightly
[*]Can't get previous H+ connection on CM10.1 Nightly
[/LIST]
I'm getting the worst headache trying to solve this. I'm more than willing to revert back to stock to try and get this working properly.
Thanks!
UPDATE:
I found out my IMEI was deleted while flashing. Does anybody know how I would get this back?
Click to expand...
Click to collapse
Try going back to stock by odin. That should work. And how did you get cm 10.2?? Can you give me the link where you downloaded from. That would be great.

Cerhio said:
Hey guys,
I recently upgraded my Rogers Galaxy S3 d2att from CM10.1 Nightly 02/12 to CM 10.2 and have no longer been able to get the usual H+ connection. I now have either no letter or an E beside the signal bar. I did the following:
Dirty Flash 10.2 through Recovery Menu
Delete cache, dalvik and data in recovery menu
Couldn't get 3G, 4G or H+ Connection so I dirty flashed 10.1
Installed latest d2att rogers modem, installed latest bootloader, neither worked
Flashed back to CM10.1 Nightly
Can't get previous H+ connection on CM10.1 Nightly
I'm getting the worst headache trying to solve this. I'm more than willing to revert back to stock to try and get this working properly.
Thanks!
UPDATE:
I found out my IMEI was deleted while flashing. Does anybody know how I would get this back?
Click to expand...
Click to collapse
Are you sure you don't mean CM 10.1.2? I don't think CM 10.2 is available for the Rogers or AT&T Galaxy S III yet...if it is please link to it.

n_alvarez2007 said:
Are you sure you don't mean CM 10.1.2? I don't think CM 10.2 is available for the Rogers or AT&T Galaxy S III yet...if it is please link to it.
Click to expand...
Click to collapse
Yes sorry, you're absolutely right! I still have service on my phone but I cannot even get 3G signal.

Cerhio said:
Yes sorry, you're absolutely right! I still have service on my phone but I cannot even get 3G signal.
Click to expand...
Click to collapse
1. Check if Access Points are correct
2. Check if you lost your IMEI (normally if you still get service but not mobile data beside edge, your IMEI will show as 0)
3. if the above aren't true, have you try flashing different nightly/stable or different roms?
and if your imei was deleted
you need to inject your imei again
first, take out the battery, beside the battery there should be serial numbers and imei numbers
secondly, you need SGS3 NV Gen and NV item reader & writer OR you can also use QRST though the process is a little more difficult (I don't think i can distribute the files here, and QRST you can google it)
as for SGS3 NV gen and nv item writer, you just need to copy and paste your imei to SGS3 NV Gen and it'll write to a text file, then all you need is to use NV item writer to connect with your phone and upload the file.
oh and you need to revert back to stock rom because the phone needed to be in RM + Modem + something mode lol... which is located in one of the secret menu .... i believe it was *#7284#

pcshano said:
2. Check if you lost your IMEI (normally if you still get service but not mobile data beside edge, your IMEI will show as 0)
Click to expand...
Click to collapse
I did...
I did
I followed your steps. The IMEI was injected successfully but the ERI is still showing 0. How do I fix that?
Or, how do I get it to re-register on the network with the IMEI in place?

Samsung Galaxy S3 (d2att) Poor or no Service
I'm having the same issue - or so it appears. my IMEI was also erased and I restored it using the method described above. That solved the issue of not being able to connect to the network at all, but now my connection last 3 minutes at best. I start off with LTE, then 3g, then g, then no letter at all and through that all, making/receiving calls, sending receiving texts, and even accessing the internet is only doable the first 3 minutes or so. After that, all if gone.
I've gone through the following radios:
I747UCLEM: modem_CWM_I747UCLEM.zip - 19.06 MB - May 22nd, 2012 (original shipped)
I747UCLG1: modem_CWM_I747UCLG1.zip - 19.06 MB - July 1st, 2012
I747UCLH1: modem_CWM_I747UCLH1.zip - 19.40 MB - August 1st, 2012
I747UCLH9: modem_CWM_I747_UCLH9.zip - 18.90 MB - August 9th, 2012
I747UCLI5: modem_CWM_I747UCLI5.zip - 19.51 MB - September 5th, 2012
I747UCDLK3: modem_CWM_I747UCDLK3.zip - 18.42 MB - November 3rd, 2012
I747UCDMG2: modem_CWM_I747UCDMG2.zip - 19.01 MB - July 2nd, 2013
I've tried various CWM versions, ROMs, and even Odined back to stock but still have the same issue. I ruled out the possibility of it being a SIM issue by placing my SIM in another phone. Service worked beautifully as expected. I took a working SIM from another phone and placed it in mine and had the same poor signal issue.
I've tried a good deal of troubleshooting methods and am seemingly stumped. I'm sorry to see that others are having the issue but I'd like to help however I can. the only thing I can say for certain is wrong at the moment is that my Serial Number seems to have been changed and no longer matches what is written on the phone....could that be the issue?
Current Serial number is displayed in about phone as: 1f03dbad
Hopefully, this provides some insight and someone a bit more knowledgeable than myself can help us find a solution.
If you need anything else, let me know and I'll do my best to provide it.

Please help I have the same issue, I have flashed back AT&T official ROM, but no 3G signals and weak phone signals. Did you guys find a solution? How do I check my ERI?
Please help if you have a solution.
triplethreat117 said:
I'm having the same issue - or so it appears. my IMEI was also erased and I restored it using the method described above. That solved the issue of not being able to connect to the network at all, but now my connection last 3 minutes at best. I start off with LTE, then 3g, then g, then no letter at all and through that all, making/receiving calls, sending receiving texts, and even accessing the internet is only doable the first 3 minutes or so. After that, all if gone.
I've gone through the following radios:
I747UCLEM: modem_CWM_I747UCLEM.zip - 19.06 MB - May 22nd, 2012 (original shipped)
I747UCLG1: modem_CWM_I747UCLG1.zip - 19.06 MB - July 1st, 2012
I747UCLH1: modem_CWM_I747UCLH1.zip - 19.40 MB - August 1st, 2012
I747UCLH9: modem_CWM_I747_UCLH9.zip - 18.90 MB - August 9th, 2012
I747UCLI5: modem_CWM_I747UCLI5.zip - 19.51 MB - September 5th, 2012
I747UCDLK3: modem_CWM_I747UCDLK3.zip - 18.42 MB - November 3rd, 2012
I747UCDMG2: modem_CWM_I747UCDMG2.zip - 19.01 MB - July 2nd, 2013
I've tried various CWM versions, ROMs, and even Odined back to stock but still have the same issue. I ruled out the possibility of it being a SIM issue by placing my SIM in another phone. Service worked beautifully as expected. I took a working SIM from another phone and placed it in mine and had the same poor signal issue.
I've tried a good deal of troubleshooting methods and am seemingly stumped. I'm sorry to see that others are having the issue but I'd like to help however I can. the only thing I can say for certain is wrong at the moment is that my Serial Number seems to have been changed and no longer matches what is written on the phone....could that be the issue?
Current Serial number is displayed in about phone as: 1f03dbad
Hopefully, this provides some insight and someone a bit more knowledgeable than myself can help us find a solution.
If you need anything else, let me know and I'll do my best to provide it.
Click to expand...
Click to collapse

I am having the same connectivity issues. I had to restore my IMEI earlier this week after a dirty upgrade, and then restored to several 10.1.x versions and back to 10.2, though this did not help. I did a stock restore and then rooted again, as well as restored 10.1.2 and nothing helped. I also dirty flashed beanstalk latest build, 2 builds of paranoid android and nothing worked.
Sometimes I can get on LTE or HSPA+ for a few minutes after turning data off and on, but this resets. I have also tried several APN settings, the ones provided by cyanogenmod as well as reconfigurations.

I having issues with CM10.1.3 ,I searching and finding this on the Google plus internet page of CM talking about compatibility of our phone with the news CM ROMs:
" To make sure your device is primed and ready for this state, the following lists the bootloaders compatible for each device:
d2att: I747UCDLK3 & I747MVLDLK4"
I have also change the baseband...
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app

warweolf said:
I having issues with CM10.1.3 ,I searching and finding this on the Google plus internet page of CM talking about compatibility of our phone with the news CM ROMs:
" To make sure your device is primed and ready for this state, the following lists the bootloaders compatible for each device:
d2att: I747UCDLK3 & I747MVLDLK4"
I have also change the baseband...
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
This is irrelevant, the new bootloader was added into the recovery ROM so there is no need to downgrade the bootloader. I did just in case to see if my issue would be fixed but as expected it was not.

Samsung Galaxy Ace 2x flashed with CM11, no mobile internet (Public Mobile)

Hello to everyone! I have Samsung Ace 2x (GT-S7560M) with Public Mobile, Canada. After the phone become incredibly lagging, I have decided to flash it with custom ROM, which I successfully did following instructions on this forum (http://forum.xda-developers.com/show...7#post50909757). I like my phone back again, the ROM is amazing.
BUT there are two huge issues - it is not connecting to Mobile Network and Bluetooth can not be enabled. (WiFi connects and working fine).
As I mentioned earlier I am with Public Mobile and able to make calls and recieve/send SMS messages with CM11. After every reboot there is message : "SIM card added. Restart your device to access the mobile network." , which can be easily bypassed by pressing right bottom button (not sure about the name, probably "Escape"). The phone indicates TELUS Network.
I read over the posts on this forum and tried to change settings in Prefered Network to GSM/CDMA auto(PRL). Also checked APN to Public Mobile (tried Telus as well) but no success in getting back 4g network.
Any suggestion? Really do not want to go back to official ROM

novice70 said:
Hello to everyone! I have Samsung Ace 2x (GT-S7560M) with Public Mobile, Canada. After the phone become incredibly lagging, I have decided to flash it with custom ROM, which I successfully did following instructions on this forum (http://forum.xda-developers.com/show...7#post50909757). I like my phone back again, the ROM is amazing.
BUT there are two huge issues - it is not connecting to Mobile Network and Bluetooth can not be enabled. (WiFi connects and working fine).
As I mentioned earlier I am with Public Mobile and able to make calls and recieve/send SMS messages with CM11. After every reboot there is message : "SIM card added. Restart your device to access the mobile network." , which can be easily bypassed by pressing right bottom button (not sure about the name, probably "Escape"). The phone indicates TELUS Network.
I read over the posts on this forum and tried to change settings in Prefered Network to GSM/CDMA auto(PRL). Also checked APN to Public Mobile (tried Telus as well) but no success in getting back 4g network.
Any suggestion? Really do not want to go back to official ROM
Click to expand...
Click to collapse
Unfortunately your issue with Bluetooth is super common with this phone and roms. In fact, as far as I'm aware there's not a single kitkat rom that doesn't disable Bluetooth. You might find a solution buried in one of the other threads pertaining to this phone, but I'm almost positive there's not a solution.
Just about every rom I've flashed for this phone gives me the sim card added message when I start it up, ignoring it is the best fix I've come across. Regarding your inability to connect to a network, it seems you've already tried everything I would have suggested. Which cm11 build did you flash, by the way?
If you can't get that sorted out you aren't stuck with going back to stock. There's also another cm11 build for the IIx/ Trend, as well as Omni 4.4.4, PAC 4.4.4, Beanatalk 4.4.3 and ALLEGEDLY SlimKat (I can't find the download link to save my life, but a few people have said someone ported slimrom to this phone).
Sorry I couldnt be of more help bru.

about my ROM
thank you for response, I am currently using CM11-20141114-UNOFFICIAL-kylessopen (240DPI) with gapps - kk -20140629-signed.

Hmm, the first time I flashed that same build I had quite a few issues and they rectified themselves when I flashed a different gapps. I think it was the January 2014 4.4.4 full package (when I've got some free time in an hour or so I'll let you know the exact one), which I found odd considering it was super out of date and yet cured what ailed me. Next time I flashed it the 20140629 package worked fine though, so who knows. You've tried redownloading that gapps package right? Sometimes an ever so slightly corrupted gapps zip can do this kind of stuff. Unfortunately I'm not super familiar with the ins and outs of this phone since its just to tide me over until I can afford to replace my Note 4 in earnest, so my ability to help here is mostly guesswork and drawing parallells. I hope you get this on the ropes dude. If you can't get it sussed out in the end I'd recommend going with Beanstalk. It doesn't have a working theme engine unfortunately and is ever so slightly more buggy (well, less buggy I. Your case I guess), but it's waaaaaaay more feature rich than either of the cm11 builds. If you value stability more than customization than Omnirom is your best bet. ALL of the roms for this phone are kinda glitchy, but I found Omnirom to be the least so.

No signal, No network, YES Imei

Hi everyone, good morning
I pose this problem ...
I updated my GT-N7100 from the stock version 4.4.2 to 7.1 RR, which is why the phone was no longer lit. The Samsung word appeared looping at its ignition and no reset options worked.
All after the battery suddenly abandoned me!
After the upgrade, unfortunately the mobile network is no longer detected, or rather, the phone does not hook up the signal even if mobile networks are detected (select networks, Vodafone, Tim, Wind, Tre).
If I try to hook my network manually (Tim), the error is the inability to record.
I checked IMEI and is present, and, as mentioned above, networks if you look manually are seen.
I've downgraded to version 4.2.2 to figure out if the problem was about rom, but even with this version the network is not hooked up.
I also tried with other sim, but nothing in fact.
Unfortunately the backup I made did not go well and did not save the files in the EFS folder .... the badge sees us well !!!!!
Do you have any suggestions?
I also tried to reflect the rom Viper, but no change in the network ...
What other tests could I do? Thank you all!