Lost 3G on T959 - Vibrant Q&A, Help & Troubleshooting

Everything has been running smoothly on my T-Mobile Vibrant until suddenly I lost my data connection (nothing was changed on my end). I am able to get a 2G connection by checking the "Use only 2G Networks" box, but when it is unchecked I get no data.
I pulled the SIM card and put in another phone and that phone did get a good 3G signal.
I flashed a new ROM - I am now using Slim Bean 2.6.0 with the KA7 modem. I replaced the SIM card with a new one. Still just 2G and only when that box is checked.
I'm stumped.

Is that the same modem you were using before?

Toast6977 said:
Is that the same modem you were using before?
Click to expand...
Click to collapse
No, before I was using KB5

http://forum.xda-developers.com/showthread.php?p=9734167
You'll find the KB5 modem there if you want it back. Flash it in CWM.

Is data enabled? Dumb question, but it can solve all of your issues. Also, make sure you have APNS.
Sent from my SGH-T989 using xda premium

Toast6977 said:
http://forum.xda-developers.com/showthread.php?p=9734167
You'll find the KB5 modem there if you want it back. Flash it in CWM.
Click to expand...
Click to collapse
Sorry, I meant that I was using the KB5 modem before I switched to the KA7, however I don't get 3G with either one. The modem change, ROM change, and new SIM card were all things I've tried to fix the problem.
My data is enabled and I double checked the APN. Sigh... may be the end of a good run for this phone.

plamoureux said:
Sorry, I meant that I was using the KB5 modem before I switched to the KA7, however I don't get 3G with either one. The modem change, ROM change, and new SIM card were all things I've tried to fix the problem.
My data is enabled and I double checked the APN. Sigh... may be the end of a good run for this phone.
Click to expand...
Click to collapse
Maybe try returning to stock and then re-root, CM10, etc.
Sent from my SGH-T989 using xda premium

Does your IMEI match the one on the back of the phone under the battery?

Toast6977 said:
Does your IMEI match the one on the back of the phone under the battery?
Click to expand...
Click to collapse
Yes, it does.

Well like stated above, the next step I would take would be to go ahead and Odin to stock. Reroot with update.zip and flash a ROM.
I recommend trying Paranoid Android. It runs very well. I would imagine whatever is amiss will get resolved.

Toast6977 said:
Well like stated above, the next step I would take would be to go ahead and Odin to stock. Reroot with update.zip and flash a ROM.
I recommend trying Paranoid Android. It runs very well. I would imagine whatever is amiss will get resolved.
Click to expand...
Click to collapse
I will give it a shot. Thanks for your help.

Related

3G Data won't connect but Wifi and Phone work fine. HELP!

Before I was having an issue where my phone wasn't working, so i flashed it with cm9 0.3.1. then rebooted and flashed again. rebooted to see if i was getting signal and i was, but still no 3G data. So I booted up and flahsed 0.4.5. once then booted and didn't it again.
now my phone is working but my 3G data isn't connecting at all. I've gone into the "info" part and made sure i'm in CDMA auto prl as well. idk what the hell is wrong with this thing.
Try flashing a blur rom, and if not sbf 198_7.
Sent from my MB855 using XDA
Have you tried the cdma fix joker has up?
Sent from my NookTablet using Tapatalk
Cubanluke88 said:
Have you tried the cdma fix joker has up?
Sent from my NookTablet using Tapatalk
Click to expand...
Click to collapse
yeah flashed it after the gapps and didn't fix anything
FC809 said:
Try flashing a blur rom, and if not sbf 198_7.
Sent from my MB855 using XDA
Click to expand...
Click to collapse
Where can I found a blur rom or the sbf 198_7. Tried looking through the threads but not so sure what one(s) to dl
brwnboy17 said:
Where can I found a blur rom or the sbf 198_7. Tried looking through the threads but not so sure what one(s) to dl
Click to expand...
Click to collapse
Rocko rom is a blur rom, and to find 198_7 look into Lokifish's sticky in the development sub fourm.
http://forum.xda-developers.com/showthread.php?p=20990149
http://forum.xda-developers.com/showthread.php?p=20331570
Sent from my MB855 using XDA
You can try the airplane mode fix as well. Just toggle airplane mode on/off - it works for me.
Same problem... no fix...
Hey guys,
I have the same problem. My phone and wifi work but as soon as I switch off wifi I cannot get data connectivity.
1. I haven't changed my provider. Used the phone before and it worked.
2. I use Siyah-Kernel 4.1.2
3. I use Dual-Boot (Primary is CM9 (stable)/Secondary is MIUI)
3a. When I installed Roms I made a factory reset/format data plus usual wipes
4. Modem installed is LPS (plus I used GetRIL to install right RIL)
5. I checked the APN and everything is as it should be
Any idea why I have this problem? And how do I fix it?
Best,
Medienkind

No 4G data connection

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.

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.

[Q] Almost back to stock

After rooting my phone I flashed a few roms and not being happy with them, I decided to flash back to stock. I downloaded a stock rom (from the faq.
Everything seems to be working except I cannot connect to 4G. Where I life has 4g and befor I started flashing it I had no issues connecting to the network. I am able to use 3G, texting and am able to make calls.
Any Ideas?
Jedite83
What all did you do starting from actually rooting your phone?
http://img716.imageshack.us/img716/3192/1362812254888.png
prairiedogn said:
What all did you do starting from actually rooting your phone?
http://img716.imageshack.us/img716/3192/1362812254888.png
Click to expand...
Click to collapse
1. I rooted the phone following these directions. However I did not make a back up (have rooted several phones before and never needed it.)
2.i flashed CM10 and it's boot.img to the phone. (cm-10.1-20130304-EXPERIMENTAL-fireball-M2.zip). I got the rom from the CM site.
At this point 4g was still working. However I was unable to send pictures via SMS.
3. A friend of mine who says he knows about phones susgested that I call *228 and update roaming (option 2 when called).
I did and 4G stopped working. This also did not fix the picture problem.
4. I flashed viperLTE and its boot.img to my phone. Picture texting worked but still no 4g.
5. I flashed this stock rom and boot.ing to the phone.
Still no 4g.
Between each flash I wiped the cache, d. cache, system and factory reset.
I think that is everything. If I think of anything else I ill edit this post.
Thank you everyone,
Jedite83
Jedite83 said:
3 . A friend of mine who says he knows about phones susgested that I call *228 and update roaming (option 2 when called).
I did and 4G stopped working. This also did not fix the picture problem.
Calling *228 from a 4G phone with a sim card can fry the sim card and it sounds like that could be what happened here.
Click to expand...
Click to collapse
Jedite83 said:
1. I rooted the phone following these directions. However I did not make a back up (have rooted several phones before and never needed it.)
2.i flashed CM10 and it's boot.img to the phone. (cm-10.1-20130304-EXPERIMENTAL-fireball-M2.zip). I got the rom from the CM site.
At this point 4g was still working. However I was unable to send pictures via SMS.
3. A friend of mine who says he knows about phones susgested that I call *228 and update roaming (option 2 when called).
I did and 4G stopped working. This also did not fix the picture problem.
4. I flashed viperLTE and its boot.img to my phone. Picture texting worked but still no 4g.
5. I flashed this stock rom and boot.ing to the phone.
Still no 4g.
Between each flash I wiped the cache, d. cache, system and factory reset.
I think that is everything. If I think of anything else I ill edit this post.
Thank you everyone,
Jedite83
Click to expand...
Click to collapse
look in settings and see what your preferred network is set at and in about phone to see if it says lte13, as far as cm10.1 -- when your mms didn't work all you had to do was was dalvic cache in recovery and mms would have worked. read the op in development for cm10 releases for the work arounds on some bugs it's all there
you may have borked your radio don't know, theres direction there to do that to(repair radio)
Aldo101t said:
look in settings and see what your preferred network is set at and in about phone to see if it says lte13
Click to expand...
Click to collapse
'LTE/CDMA' is selected.
prairiedogn said:
Calling *228 from a 4G phone with a sim card can fry the sim card and it sounds like that could be what happened here.
Click to expand...
Click to collapse
Is there a way to test this?
You may need to run the ruu package to get your radio working again. The stock and cm10 rils can sometimes get screwed up flashing between the 2. You can find the ruu on unlimited's site. Which can be found in the s off thread in development.
Sent from my Incredible 4G LTE using Tapatalk 2
Jedite83 said:
3 . A friend of mine who says he knows about phones susgested that I call *228 and update roaming (option 2 when called).
Click to expand...
Click to collapse
Your friend does not know about phones. Consider ignoring his future advice. Post 2 of the CyanogenMod thread is likely relevant to you. Did you bother reading the whole first post as is clearly noted?
prairiedogn said:
Calling *228 from a 4G phone with a sim card can fry the sim card and it sounds like that could be what happened here.
Click to expand...
Click to collapse
Calling *228 will not "fry" the SIM card in this phone, but does not serve any purpose for phones with SIM cards.
MJL99 said:
You may need to run the ruu package to get your radio working again. The stock and cm10 rils can sometimes get screwed up flashing between the 2. You can find the ruu on unlimited's site. Which can be found in the s off thread in development.
Click to expand...
Click to collapse
Please don't unnecessarily recommend running the RUU. In fact if the radio did stop functioning from using CM, the RUU has nothing to do with the recovery process. It's the factory reset feature which restores the correct settings in the radio's NV memory.
I was able to get another sim (attached to a different account) and it gave me 4G. I called Verizon and they refreshed something and that seems to have fixed it. They are sending me a new sim card anyway.
Thanks for the help.
Jedite83
mdmower said:
Please don't unnecessarily recommend running the RUU. In fact if the radio did stop functioning from using CM, the RUU has nothing to do with the recovery process. It's the factory reset feature which restores the correct settings in the radio's NV memory.
Click to expand...
Click to collapse
You're right, I misspoke. I was under the impression that a file from the ruu was needed to return to stock ril. Sorry about the confusion.
Sent from my Incredible 4G LTE using Tapatalk 2

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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