No 4G data connection - Galaxy S III Q&A, (US Carriers)

Hi. I just Odin'ed back to stock firmware after experiencing no 4G data, only Edge, after flashing the Tmobile recovery through Rom Manager while on CM9 nightly #2. I had wiped and reflashed CM9, with no luck. I thought Odin'ing would fix the problem but it did not. I also tried removing the SIM card for a couple of minutes. Anyone have any suggestions what i could try? Thanks
Update: So far flashing CWM recovery using Rom Manager has set the IMEI to 0, on mine and MacTheRipperr's phone.
Anyone else with similar issues after flashing recovery through Rom Mananger?

Se7eN43 said:
Hi. I just Odin'ed back to stock firmware after experiencing no 4G data, only Edge, after flashing the Tmobile recovery through Rom Manager while on CM9 nightly #2. I had wiped and reflashed CM9, with no luck. I thought Odin'ing would fix the problem but it did not. I also tried removing the SIM card for a couple of minutes. Anyone have any suggestions what i could try? Thanks
Click to expand...
Click to collapse
Are you sure it wasn't a Tmobile problem? Maybe you should try other kernels and/or roms... I'm using AOKP on my Galaxy S since february and on my Galaxy SIII since June 19th, I haven't experienced any problems with mobile data, the link is below.
I hope it works.
http://forum.xda-developers.com/showthread.php?t=1716001

Check your imei under the phone status. Do you have a 0? If so the same thing happened to me.
Do you have a back up of your /efs from the root?
Sent from my SGH-T999 using Tapatalk 2

edugmax said:
Are you sure it wasn't a Tmobile problem? Maybe you should try other kernels and/or roms... I'm using AOKP on my Galaxy S since february and on my Galaxy SIII since June 19th, I haven't experienced any problems with mobile data, the link is below.
I hope it works.
http://forum.xda-developers.com/showthread.php?t=1716001
Click to expand...
Click to collapse
Thank you for your response. I'm 99% sure it's not a Tmobile problem. I didn't have any issues with mobile data at all. This happend soon after i rebooted after flashing the tmobile Rom Manager custom recovery. First thing it did was give no signal connection at all. Then i reflashed the CM9 rom, which then was only able to get Edge network. Even after Odin'ing do i still only get Edge. I haven't tried a custom kernel yet. With certain devices, I've known of issues with modem's are sometimes fixed by flashing a standalone modem rather than going through the whole Odin process. But that isn't an option that is available for the T999 varient.

MacTheRipperr said:
Check your imei under the phone status. Do you have a 0? If so the same thing happened to me.
Do you have a back up of your /efs from the root?
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
Yes it reads 0 and no i do not have an /efs backup. The root process I used was the Sprint root zip file flashing CWM and root using Odin. I wasn't aware of a backup that was made. After Odin'ing back to stock, i did the same root method and have flashed Redrum Lean Stock Mod which im currently on. Where would i find the /efs if this method did make a backup of it?

Question for curiosity s sake did you flask the cwm touch recovery

You should backup your EFS folder before flashing any rom, if you'd lost your IMEI you will have problems with mobile data and/or phone service.
I've found two topics about it here, the first one has a link to recover Tmobile and the second is more general. I hope it works!
http://forum.xda-developers.com/showthread.php?t=1746665
http://forum.xda-developers.com/showthread.php?t=1753833
Sent from my GT-I9300 using xda app-developers app

edugmax said:
You should backup your EFS folder before flashing any rom, if you'd lost your IMEI you will have problems with mobile data and/or phone service.
I've found two topics about it here, the first one has a link to recover Tmobile and the second is more general. I hope it works!
http://forum.xda-developers.com/showthread.php?t=1746665
http://forum.xda-developers.com/showthread.php?t=1753833
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
You guys are freaking me out about losing IMEI. Thankfully mine is fine after rooted and flashing several ROMs.
How do I backup my EFS folder?

/sigh re-read all the imei threads, there's like 10 of them. Backing up the efs folder will not help you at all. The nv data.bin file is not there anymore and nobody has found it yet. Your only option is odin back to stock, take your phone back to where you bought it, and say this POS broke and i can't get lte even though i paid for it. If you're still under warranty hopefully they will replace it.

Related

[Q] Phone totally screwed?

Hey all.
I was on MIUI 1.9.2 and flashed VillainRom (wiped everything as usual) and after the reboot, I couldn't get any signal. Went to the mobile network screen and I get an error saying I don't have a sim card in my phone.
My baseband and IMEI all read unknown.
Tried restoring a nandroid with no luck.
Are there any fixes or do I need to send it off to be fixed?
Sent from my GT-I9100
Another problem with Custom Rom!
Anyway, do a Factory Reset, if it doesn't work then flash Stock ROM.
Sent from my GT-I9100 using XDA App
GANJDROID said:
Hey all.
I was on MIUI 1.9.2 and flashed VillainRom (wiped everything as usual) and after the reboot, I couldn't get any signal. Went to the mobile network screen and I get an error saying I don't have a sim card in my phone.
My baseband and IMEI all read unknown.
Tried restoring a nandroid with no luck.
Are there any fixes or do I need to send it off to be fixed?
Sent from my GT-I9100
Click to expand...
Click to collapse
I hope you backed up your EFS folder, If not only Samsung can fix it.
try to flash a modem via cwm
happend to me a couple of times on sgs i9000 when i come from miui that helped me
dj_m said:
try to flash a modem via cwm
happend to me a couple of times on sgs i9000 when i come from miui that helped me
Click to expand...
Click to collapse
Didn't realise there were CWM modems available. All I've found are for Odin..
jhernand1102 said:
I hope you backed up your EFS folder, If not only Samsung can fix it.
Click to expand...
Click to collapse
Im gunna go ahead and say no :/
Not that I know of anyway.
Sent from my GT-I9100
This might be a long shot but try toggling airplane mode on, reboot the phone and once fully booted toggle airplane mode off.
This issue has nothing to do with the Rom you flashed, (not VillainRom anyway) it seems in all your flashing you may have messed up your EFS partition, some people got it back when they flashed a stock ROM, if you don't, you may need to get in contact with Odia, he can assist you with getting your IMEI back
achillies400 said:
This issue has nothing to do with the Rom you flashed, (not VillainRom anyway) it seems in all your flashing you may have messed up your EFS partition, some people got it back when they flashed a stock ROM, if you don't, you may need to get in contact with Odia, he can assist you with getting your IMEI back
Click to expand...
Click to collapse
Cheers.
I'm now downloading stock firmware. Where would I find Odia, on xda?
Sent from my GT-I9100
*Edit*
Flashed KG3 fully, nothing.
looked inside the KG3 zip again and found a tar with EFS in the name. flashed it via Odin and all is well.
Thanks for your help.
GANJDROID said:
Cheers.
I'm now downloading stock firmware. Where would I find Odia, on xda?
Sent from my GT-I9100
*Edit*
Flashed KG3 fully, nothing.
looked inside the KG3 zip again and found a tar with EFS in the name. flashed it via Odin and all is well.
Thanks for your help.
Click to expand...
Click to collapse
Good for you it worked .

Flashing custom ROM kills EFS

I have problem with flashing, bought sgs2 today, wanted to make flash custom rom, phone is rooted with Doomlord exploit and there is cf root kernel flashed for cwm access (flashed via odin mobile), no simlock
When I flash any custom rom, phone apk keeps crashing, there is no cellular network and no IMEI in About the Phone section. I have tried restoring IMEI with EFS pro but after reboot its the same problem. I have EFS backup and nandroid backup.
What is wrong, I have two other phones, sgs2 and note, I didn't have those problems before, what is wrong this time? Any help will be great for me, I would appreciate ideas.
Is your phone plugged in to the wall charger or a USB port.
I used a custom ROM that would not allow me to reboot plugged in. Same problems as you.
When I reboot unplugged, service returns.
Sent from my GT-I9100 using xda premium
I'm aware of this problem, happend to me before, but unplugging doesn't help in that case. When I delete nv_data.bin and nv_data.bin.md5 it helps instantly but returns after reboot.
I have nv_data.bak in this folder and its some old file, like 2010 old, should I deleted it or something?
solved with wipe, which gave me random IMEI then restored right one with EFS Pro (thanks a lot for Dev Team of that app)
I keep reading about people loosing their ime after a flash but never bothered to remember if the flash was via CWM or Odin.
This might already have been investigated and I've missed it but it would be nice to know if anyone has lost their ime using Odin or if it's only through CWM.
This looks like it's happening more and more so it would be good to find out the cause.
Sent from my GT-I9100 using XDA App
This happened me yesterday, glad you managed to fix it, I didn't have a backup but thankfully there is a market app called GSII-repair and it can restore imei without a backup, hope this helps someone
Sent from my GT-I9100 using xda premium
eamon0989 said:
This happened me yesterday, glad you managed to fix it, I didn't have a backup but thankfully there is a market app called GSII-repair and it can restore imei without a backup, hope this helps someone
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
i cant find this app you talking about..what is the exact name or dev?
dzel said:
i cant find this app you talking about..what is the exact name or dev?
Click to expand...
Click to collapse
Google finds it
http://www.androidapps-home.com/gsii-repair-android-2555711.html
jje

S3 Sim Card Issue

Hello,
Just recently attempted to restore to a stock rom using the following download - I9300BVALF4_I9300TMUALF2_I9300BVLF2_HOME.tar
How ever on restoring it when my phone was booted up it seems now it's asking me for a SIM Unlock code, where as before my phone was fully unlocked. My phone is rooted and also the IMEI number is fully correct. attempted to clear EFS folder and still no luck.
Does anyone have any kind of idea. I'm kind of worried that I have screwed my S3 up.
Sorry if this is the wrong section.
I doubt this is a permanent problem, you may want to try to use Odin to go back to stock and start over.
Sent from my Galaxy Nexus using Tapatalk 2 Beta-5

Unlocked Note on T-Mobile with NO Sim error

i've been working on this Galaxy Note for about a week now. it is an AT&T i717 and it is unlocked. It worked before when my sister used it with t-mobile but now whenever I put my sim in it says "NO SIM/Emergency Calls Only". I've tried everything I know of: restoring it back to Stock 2.3.6 with Odin, restoring it to 4.0.3 with Odin, factory resets, wiping cache, wiping dalvik cache, formatting all of the data, flashing different modems, flashing at&t stock kernel, flashing at&t stock radio. out of all of this none of it has worked. I would think there was something wrong with the sim tray/contact but it worked fine a little over week ago. there is no problem with the imei or baseband, both show up regularly. I'm pretty much out of ideas so any new ideas would be greatly appreciated. Thank you!
its a known issue for very few here.. just do a search.. you will find the thread(s).
havent read if they have found a solution before but last time i read the only fix was when somebody sent it in for a fix
melcali said:
its a known issue for very few here.. just do a search.. you will find the thread(s).
havent read if they have found a solution before but last time i read the only fix was when somebody sent it in for a fix
Click to expand...
Click to collapse
I've done a lot of digging around here and I haven't found anything that's worked.
Also, my sim works completely fine in my GS2 so there's nothing wrong with the sim.
Similar thing happended to me att galaxy note unlock T-Mobile sim card I put custom ROM installed T-Mobile radio out of 3 only two would recognized my T-Mobile sim.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
androidtv11 said:
Similar thing happended to me att galaxy note unlock T-Mobile sim card I put custom ROM installed T-Mobile radio out of 3 only two would recognized my T-Mobile sim.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Click to expand...
Click to collapse
which radio did you flash? I've tried the Blaze radio and of course the stock at&t but I'll try the other ones. And which ROM would you recommend?
and thank you so much, I've been working on this phone for a while and it's been kinda stressful lol.
OP, I had the same issue, once I flashed any radio, my sim would not be recognized. I tried everything and it seems the only thing that worked was to flash original GB AT&T stock rom using odin and basically unrooting it. as factory as it could get. Then from there, root it. then upgrade to any rom. Make sure everything works before before flashing another radio. before you do so, do a nandroid to save you hassle.
N1vek215 said:
OP, I had the same issue, once I flashed any radio, my sim would not be recognized. I tried everything and it seems the only thing that worked was to flash original GB AT&T stock rom using odin and basically unrooting it. as factory as it could get. Then from there, root it. then upgrade to any rom. Make sure everything works before before flashing another radio. before you do so, do a nandroid to save you hassle.
Click to expand...
Click to collapse
Well I've it back to stock odin but it still says no sim. I've flashed the stock radio and modem as well but still nothing.
Does it work with your sisters sim?
scottx . said:
Does it work with your sisters sim?
Click to expand...
Click to collapse
no, it doesn't work with her sim anymore either.

How do i flash a modem correctly?

Everytime i flash a modem i get no service i need my t-mobile 4g please help i know i have t-mobile 4g in my area it doesn't matter what modem i flash when i reboot it says i don't have a sim inserted causing me to go back into recovery and do a restore
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Which ROM is your phone on?
Do you know your APN setting?
Class_of_punk26 said:
Everytime i flash a modem i get no service i need my t-mobile 4g please help i know i have t-mobile 4g in my area it doesn't matter what modem i flash when i reboot it says i don't have a sim inserted causing me to go back into recovery and do a restore
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Click to expand...
Click to collapse
I had the same problem till I ditched TWRP for CWM. My I717 seems to like ClockworkMod better. Just couldn't get TWRP to flash the modem correctly. *#06# will give you the "Null Null" IMEI message if you have the same problem as me. Use Kies to recover and initialize the device, its under "Tools". When done you will be on JB with proper IMEI. Flash CWM through odin and go from there.
**EDIT**
Turns out that the problem I was having might have been because of outdated modem files. The issue is resolved for me with the modems at the following link. 4g lte has never been this fast before these drivers. Fast and stable, be sure to give the OP a thank you.
Link: http://forum.xda-developers.com/showthread.php?t=1679722
Moto Mouth said:
I had the same problem till I ditched TWRP for CWM. My I717 seems to like ClockworkMod better. Just couldn't get TWRP to flash the modem correctly. *#06# will give you the "Null Null" IMEI message if you have the same problem as me. Use Kies to recover and initialize the device, its under "Tools". When done you will be on JB with proper IMEI. Flash CWM through odin and go from there.
Click to expand...
Click to collapse
I've been having the same issue. I started with Stock, went to CWM ver 6, CM 10.1. Decided to flash a modem, and then it would say unknown baseband / no phone number / no IMEI. After trying many modems and restores, I have restored through KIES back to factory as of now.
If anyone has an idea, it would be appreciated.
I live in Florida the only way I get 4g LTE is with stock modem...I used to have the same issue...so I just keep it stock...
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
thystra said:
I've been having the same issue. I started with Stock, went to CWM ver 6, CM 10.1. Decided to flash a modem, and then it would say unknown baseband / no phone number / no IMEI. After trying many modems and restores, I have restored through KIES back to factory as of now.
If anyone has an idea, it would be appreciated.
Click to expand...
Click to collapse
no need to do anything.just go to app setting ...running ..you will see ''sim'' app running just close it and restart your phone it will show your imei ...n baseband all....

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