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[Q] Unable to get 4g

Alright, I'm a flash addict, love trying all the roms and well I was switching from bamf 2.0 beta 4, to Gingeritis VIII. I did my wipes and everything special, yet when I finally load it up, my 4g is not there. I'm in a 4g area, and I can get 3g but not my normal 4g. Not sure what to do, I even tried restoring back to my bamf rom with no luck. I had it before I did the switch and it was working fine. Anyone else having a issue or know what could be causing my problems? Forgot to mention I did try changing the radio settings and doing a fix permissions, neither did anything.

Did you update the radio?

Have you called Verizon to see if there is an outage? My 4g went down for a few hours yesterday, might just be them working on the network.

Radio was updated and I'll give big red a call, I mean its kinda odd I hold my 3g easily yet my 4g dies. I've had my 4g all night, and it did happen in the morning, so maybe they are working on it.

Called big red and they told me it would be back online soon just a short outage in the area. Came back online as I was typing this lmfao
XDA App - HTC: Thunderbolt

Hellation said:
Called big red and they told me it would be back online soon just a short outage in the area. Came back online as I was typing this lmfao
XDA App - HTC: Thunderbolt
Click to expand...
Click to collapse
Everyone needs to remember, VZW is constantly upgrading/testing/fixing their LTE network. Things like this will be going on most likely all year as they continue to roll out to more cities/markets. First thing to do if your 4G starts acting up is just give them a call. More likely than not, they are doing work, it's just coincidence that it stopped working right after a flash

Yeah I can't get 4g to work either. It might be because I don't have it yet. I figured I would just flash rom after rom till I find one that works.
Just trying to get past 10 posts.

I am also in a 4G area (Los angeles) and had 4G all the time but when I upgraded to the Gingerbread leak I lost it and yes I flashed new radio, its been about a week now. Haven't called big red yet and also haven't heard of updates in my area but 1 week, that's a long time. I also reverted to froyo with accompanying radio and no change...wondering if anyone else in LA area has the same problem or do I have a problem with my phones hardware...

Be sure to reboot the phone like 5 times. That brought it back for me.

B3L13V3 said:
I am also in a 4G area (Los angeles) and had 4G all the time but when I upgraded to the Gingerbread leak I lost it and yes I flashed new radio, its been about a week now. Haven't called big red yet and also haven't heard of updates in my area but 1 week, that's a long time. I also reverted to froyo with accompanying radio and no change...wondering if anyone else in LA area has the same problem or do I have a problem with my phones hardware...
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Click to collapse
ApplCobbler said:
Be sure to reboot the phone like 5 times. That brought it back for me.
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Click to collapse
I haven't had any data since friday afternoon. I had it connect to 3G earlier this morning but it promptly disconnected.
I've tried rebooting since friday. Setting to CDMA, enabling Rev A from ##778. Still nothing.
I'm on the launch stock rooted rom.

unlisted said:
I haven't had any data since friday afternoon. I had it connect to 3G earlier this morning but it promptly disconnected.
I've tried rebooting since friday. Setting to CDMA, enabling Rev A from ##778. Still nothing.
I'm on the launch stock rooted rom.
Click to expand...
Click to collapse
I called tech support and let them know of the issue, said there is no 4g outages in my area (los angeles) and was instructed to factory reset, which i do before any rom install then i gotta call back-if and when i get this resolved i will post the outcome.

Not sure what rom you're on now, but whenever I flash something if I lose data I have to go into the antenna settings and force 4G for a while and it will pop back up
Sent from my ADR6400L using XDA Premium App

I'm still on Baseband 1.16.00.0223 and Software 1.12.605.6
Could it be since i'm rooted and have not applied the OTA, that verizon is refusing to authenticate my data (connection)? Because when i look at lteonoff, it says i'm connected to whatever network i specify, (LTE, CDMA - eHRPD OR Rev. A [if i go into ##778])
If I go to options ->software update -> check new, the 3G or 4G icon will pop up and checks for a newer firmware. It tells me there is a new update and i can press okay, defer, or deny. As soon as i exit that and try to use the browser, the 3/4G icon goes away. Should I update to the MR1 OTA?

unlisted said:
I'm still on Baseband 1.16.00.0223 and Software 1.12.605.6
Could it be since i'm rooted and have not applied the OTA, that verizon is refusing to authenticate my data (connection)? Because when i look at lteonoff, it says i'm connected to whatever network i specify, (LTE, CDMA - eHRPD OR Rev. A [if i go into ##778])
If I go to options ->software update -> check new, the 3G or 4G icon will pop up and checks for a newer firmware. It tells me there is a new update and i can press okay, defer, or deny. As soon as i exit that and try to use the browser, the 3/4G icon goes away. Should I update to the MR1 OTA?
Click to expand...
Click to collapse
No, that's not why you don't have to worry about that just yet haha. Try and force 4G by putting it in LTE mode
Sent from my ADR6400L using XDA Premium App

Im just in a 3g area and everytime I go to a gigerbread rom and radio all I get is 1x. Then reverting started jot even fixing the problem. After about 10 flashes back and forth and rebooting a hung I finally ended up on Froyo with 3g. I'm staying here. Not worth my time to run gingerbread.

I was running a GB rom and this afternoon lost all data.
If I take out the sim card and reboot, I can get data for a minute or two...then it goes again.
I'm going back to stock and taking my phone in tomorrow.

Ugh to the guy that said call tech support to see if there is an outage, I don't work in a call center but do in a store and I hate when people come in or call for outages my suggestion is to follow @vzwsupport on Twitter they will let you know in no time and it keeps you from having to go through the menus and crap.
Sent from my ADR6400L using Tapatalk

I re-flashed back to stock and now I've got 4G back.
If anyone is having these problems after running GB I would use JCase's "back to Froyo" flash before trying anything else.

Verizon has had a known problem of thunderbolts loosing its 4g, 3g and 1x. I had the same problem over a month ago when my phone was only able to receive calls and text. Had no data.. so I called them they had me do a factory reset and it fixed it
Sent from my THUNDERBOLT using XDA App

turn off background data and auto sync then reboot when u get 4g wait a sec then check the internet to make sure its really on then turn sync etc back on back on

[Q] help. no data connection

ive been running eclipse v1.4 with pbj kernel with no problems til this morning. ive completely lost data connection. already tried restoring back to a previously working backup in cwm but no luck. and tried restoring to stock with odin and flashing different modems still no luck.
i had tried out jt's latest ics rom about a week ago but restored back with no problems and had data working.
please help. any ideas would be great. my only other thought is that the sim is bad.

Sim could be bad Verizon will give you one for free if that is the case or could just be another data outage try putting your phone on 3g only and see if you have data
Sent from my SCH-I510 using xda premium

its what i figure. ive already tried toggling back and forth between 3g and 4g to get the radio to reset. nothing. toggle data on and off. still nothing

Might be a short outage on Verizon also. Been out in multiple cities today for a couple of hours at a time. Prepping for the expansion this week.
Charge-TwStock 1.4 / Bought this app!

so ive pretty much covered every thing that i can do right now?
i guess i just get to sit and wait.

Urget Help Needed ... No Data/Service

I have no idea what I did. Just got my infuse, flashed to GingerBread and then flashed a kernal with CWM. I then flashed an ICS kernal to flash CM10. I got CM10 flashed and everything was working perfect. And then about 4 hours into using my phone my data and cell service shuts off. Also it shows bars like I have service but it wont send or receive calls or texts. Theres no H or 3/4g icon either. Im not in airplane mode, mobile data is ticked on. I flashed back to stock GB and its stilling doing the same thing.... anyone have any idea what is going on here? How could my radio just stop working .... Please help me out!
EDIT- alright wtf i tried to call someone and it says" your device has been blocked from network use " ...... I think I found the issue time to call up ATT

cantkill32 said:
I have no idea what I did. Just got my infuse, flashed to GingerBread and then flashed a kernal with CWM. I then flashed an ICS kernal to flash CM10. I got CM10 flashed and everything was working perfect. And then about 4 hours into using my phone my data and cell service shuts off. Also it shows bars like I have service but it wont send or receive calls or texts. Theres no H or 3/4g icon either. Im not in airplane mode, mobile data is ticked on. I flashed back to stock GB and its stilling doing the same thing.... anyone have any idea what is going on here? How could my radio just stop working .... Please help me out!
Click to expand...
Click to collapse
Maybe att is down/working on tours in your area??? I'm really kinda clueless my self since you said you went back to stock and still had the same problem...
Go to settings, about phone, status and check and make sure your imei still looks normal
Could also maybe be a hardware failure?
Sent from my HTC PH39100 using Tapatalk 2

i was scared that my imei was going to be blank but it looks normal im on the phone with them now and they said my phone number was suspended temp. apparently the phone i bought on CL was stolen but they dont even have the IMEI for my infuse .... they said im still using my atrix 2 .... what the **** .. Man im really pissed
EDIT - ugh what the hell the phone was reported stolen so my number is black listed for 24 hours and ATT is investigating it to see if i can use the phone . Today is one bad day ... shouldve just bought a nexus from google .

Get Google Voice and set it up on you PC. Select a new number and then get an app like Talkatone and continue on without AT&T.

4G gone on cm10 for me

UPDATE 2. I've read enough around and heard from enough people that it doesn't matter if you root, flash a rom, tw or cm10 or are totally stock. the SGS 3 eats SIM cards. most think it does so when flashing or updating to the G7 radio. doesn't matter if you flashed it yourself or took the OTA update. Some people just can't get 4g. some can't check for a receive OTA updates. A new SIM card has fixed every issue i've seen so far regarding either of those two issues.
UPDATE....new sim card was the only thing that would fix this issue for me. Seems it wasn't cm10 related as I couldn't get 4g on stock or on tw roms either. Not sure if the sgs3 is eating sims or if the flashing of roms or radios or rooting caused the issue.
I used to have 4G...then I started using some cm10 ROMs and now 4G is gone. Looking for recommendations on how to get it back?
Do you think a data wipe and loading of a TW ROM would be enough? or are more drastic measures needed?
thanks,
(I don't live in a 4G area so I can only test when I'm out on the road) (otherwise I'd load a TW ROM right now to test)

do you still have imei number in settings/phone info/status.

droidstyle said:
do you still have imei number in settings/phone info/status.
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Click to collapse
yep its there like normal. Everything else works and works really well. Just no 4g.
I've done a full wipe, cache, d-cache, format system but it didn't help.

Have you tried dialing *#*#4636#*#* then under phone information make sure it says lte cdma you may have accidentally hit the toggle to turn off lte.
Sent from my sexy white Eclipsed galaxy S3

kintwofan said:
Have you tried dialing *#*#4636#*#* then under phone information make sure it says lte cdma you may have accidentally hit the toggle to turn off lte.
Sent from my sexy white Eclipsed galaxy S3
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Click to collapse
Well, I live outside of normal Verizon territory so maybe that's why I get "can't complete the number as dialed" message when I try *#*#4636#*#*
Here is a screenshot of those settings when looking through the menus

Go back to stock. If it's not working still - back up everything you want on your INTERNAL SD card (like pictures, etc) and dial *2767*3855# . Should fix it. The reason you probably can't dial the above # is you're not on stock.

I had the same problem and I have no idea why this fixed it or if it will help you, but here's what I did.
Download Phone Info from the Play Store and use it to force LTE only. When I did that, the lte icon came on but I had no bars. I opened the browser to see if I had data at all, which I did. Then all of a sudden i'm back to 4 bars on lte. I went back into Phone Info and switched it back to the default and then even uninstalled it and i'm still back to normal lte service.
Sent from my Verizon Galaxy SIII

JakeFromStateFarm said:
I had the same problem and I have no idea why this fixed it or if it will help you, but here's what I did.
Download Phone Info from the Play Store and use it to force LTE only. When I did that, the lte icon came on but I had no bars. I opened the browser to see if I had data at all, which I did. Then all of a sudden i'm back to 4 bars on lte. I went back into Phone Info and switched it back to the default and then even uninstalled it and i'm still back to normal lte service.
Sent from my Verizon Galaxy SIII
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Click to collapse
I thought I heard some scary bad things about that app and people losing there imei number?
which one did you use
https://play.google.com/store/apps/...251bGwsMSwxLDEsIm15Yy5waG9uZS5QaG9uZUluZm8iXQ..
or
https://play.google.com/store/apps/...wsMSwxLDEsInN5c2luZm8uc3lzaW5mby5zeXNpbmZvIl0.
edit
must be the Taiwan one
edit 2
that app won't even open. I'm guessing you need to be on a touch wiz rom or completely stock to use it?

Use that app. Its just a shortcut for the dialer code I gave you. Don't know why it didn't work though. Its a internal command I can run it in airplane mode.
Sent from my sexy white Eclipsed galaxy S3

kintwofan said:
Use that app. Its just a shortcut for the dialer code I gave you. Don't know why it didn't work though. Its a internal command I can run it in airplane mode.
Sent from my sexy white Eclipsed galaxy S3
Click to expand...
Click to collapse
I restored a backup of a Touch Wiz rom i had saved and there I could use the app. (dialing the number directly still didnt' work just fyi)
So next time i'm in a 4g area...I'll restore that tw rom and run that app and give it a go.
If it works. Then i think I'll try to install the cm10 rom i want to use and test 4g again.
thanks for the help.
I did a format system when I installed my cna cm10 rom. Any chance that made me lose 4g?
seems odd as many are using that rom with 4g.
Did it break for me for how I did my system wipe or factory reset or that i used CWM instead of TWRP?
ugh. to many things it could probably be

Strange I use cwm and full wipe I think your phone just freaked out.
Sent from my sexy white Eclipsed galaxy S3

kintwofan said:
Strange I use cwm and full wipe I think your phone just freaked out.
Sent from my sexy white Eclipsed galaxy S3
Click to expand...
Click to collapse
do you go into advanced options and mount system so you can format system?
(wondering if that's what got me)

resolved similar problem
rfranken said:
I used to have 4G...then I started using some cm10 ROMs and now 4G is gone. Looking for recommendations on how to get it back?
Do you think a data wipe and loading of a TW ROM would be enough? or are more drastic measures needed?
thanks,
(I don't live in a 4G area so I can only test when I'm out on the road) (otherwise I'd load a TW ROM right now to test)
Click to expand...
Click to collapse
I had the same problem after installing aokp jb#1.
Rolled back to stock rooted, tried cm10, aokp 2&3.
Still no 4G.
Was planning to go back to stock and hit Verizon.
In the meantime, I installed juice defender to extend battery life.
Juice defender disables WiFi and radios to save energy.
Sure enough, when I wake the phone, 4G comes on!!!
Not 100% sure this is what fixed it, but.... I have solid 4G now

rfranken said:
do you go into advanced options and mount system so you can format system?
(wondering if that's what got me)
Click to expand...
Click to collapse
Every time. But every phone is a little different.
Sent from my sexy white Eclipsed galaxy S3

i seem to have lost 4g also.
i have IMEI.
running paranoid android 2.16

the Only thing that would fix this issue for me is a new SIM card.
fyi to those still fighting this issue

ddurandSGS3 said:
i seem to have lost 4g also.
i have IMEI.
running paranoid android 2.16
Click to expand...
Click to collapse
I did too last night on stock rooted. That was on verizons end I believe. I lost all service and data for about two hours. Then it came back on. I freaked out and odined back to stock which didn't work. Thought it was the sim card but it fixed itself.
Not the rom. That was a provider issue for sure. I had imei as well
Sent from my SCH-I535 using Tapatalk 2

I recently bought a S3 from swappa which came with CM10. I reverted back to stock when I was having issues with calls dropping and other problems. I was never able to get 4g although I used to have it consistently on my galaxy nexus. I used phone info to force 4g lte and that seems to work but I can't receive any calls when on it. As soon as i switch back to LTE/CDMA/EvDO the phone goes back to 3g and I can get calls. I'm going to head to the verizon store after work to see if they'll give me a new SIM but just seems strange I can force LTE and it works.
My Nexus died when it got wet. Anyone think the SIM could have gotten messed up getting wet?

lilfurson said:
I recently bought a S3 from swappa which came with CM10. I reverted back to stock when I was having issues with calls dropping and other problems. I was never able to get 4g although I used to have it consistently on my galaxy nexus. I used phone info to force 4g lte and that seems to work but I can't receive any calls when on it. As soon as i switch back to LTE/CDMA/EvDO the phone goes back to 3g and I can get calls. I'm going to head to the verizon store after work to see if they'll give me a new SIM but just seems strange I can force LTE and it works.
My Nexus died when it got wet. Anyone think the SIM could have gotten messed up getting wet?
Click to expand...
Click to collapse
its possibility for sure...also you could try reprovisioning your device by dialing *2767*3855#
be warned this wipes data!

droidstyle said:
its possibility for sure...also you could try reprovisioning your device by dialing *2767*3855#
be warned this wipes data!
Click to expand...
Click to collapse
Yeah I'd really like to know if ^ this fixes it. If not I'd bet the new sim card will have you working instantly
lilfurson
what your describing with your 4G was Exactly my experience with it. new sim card...and all is well.

can't access 3g/4g after flashing cm10.1 (even when I returned to stock) [solved]

ok, so what happened was,
I was on embryo 6.11 (a mod of the jellybean leak) and one day I noticed that my phone was off,
so i turned it back on, and it was stuck at the samsung logo,
so I attempted to do a nandroid restore, and my phone was unable to read my microSd card.
long story short my microSD got fried somehow (could not even reformat).
So I decided to try out CM10.1 so I formatted the system, and data, and flashed it,
I am using net10 with a tmobile sim card, so I selected the APN for it, and I was unable to access the internet,
no 3g/4g or even gprs, or what ever the other super slow one's called.
So I formatted data/system and flashed back to embryo, and used the radio I was using before,
and I set up the apn again, and no luck, just like with cm, I could make calls, and send/receive texts, but no data.
I made sure I had an IMEI, and that 'mobile data' was checked, but no luck,
I also tried the t-mo radio, but no luck (at&t radio give me better reception anyway..)
I read some other posts and followed their suggestions, such as flashing cm10 stable, then going to cm10.1
but nothing seems to work, could my 4g/3g antenna have been fried? is their any way to check that?

BOBdotEXE said:
ok, so what happened was,
I was on embryo 6.11 (a mod of the jellybean leak) and one day I noticed that my phone was off,
so i turned it back on, and it was stuck at the samsung logo,
so I attempted to do a nandroid restore, and my phone was unable to read my microSd card.
long story short my microSD got fried somehow (could not even reformat).
So I decided to try out CM10.1 so I formatted the system, and data, and flashed it,
I am using net10 with a tmobile sim card, so I selected the APN for it, and I was unable to access the internet,
no 3g/4g or even gprs, or what ever the other super slow one's called.
So I formatted data/system and flashed back to embryo, and used the radio I was using before,
and I set up the apn again, and no luck, just like with cm, I could make calls, and send/receive texts, but no data.
I made sure I had an IMEI, and that 'mobile data' was checked, but no luck,
I also tried the t-mo radio, but no luck (at&t radio give me better reception anyway..)
I read some other posts and followed their suggestions, such as flashing cm10 stable, then going to cm10.1
but nothing seems to work, could my 4g/3g antenna have been fried? is their any way to check that?
Click to expand...
Click to collapse
Finally got a hold of net10,
turns out, their 'unlimited data' dose not cover 12gb's of uploading in 3 weeks
... they 'suspended' my data use.

BOBdotEXE said:
Finally got a hold of net10,
turns out, their 'unlimited data' dose not cover 12gb's of uploading in 3 weeks
... they 'suspended' my data use.
Click to expand...
Click to collapse
You expected that to be OK? Lmfao.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

mtdew said:
You expected that to be OK? Lmfao.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
I was uploading a bunch of youtube videos, 1080p, mp4/aac (my home internet has terrible upload speed)
they were each about 1.5-2GB I'd been doing that for a while, so I figured it'd be ok,
But I guess they finally caught on to me. (lol)