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No 4G at all

I have an s3 that I flashed to CM10, AOKP 6 and I also tried synergy. I cannot seem to get LTE on the first 2 adn with synergy, I can only get it by using the phone info thing and switching to an LTE ONLY mode. I noticed when I was stock I didnt see it going to LTE either. is this a problem with it switching over or what? When I try to switch to the LTE ONLY mode on the other 2 roms, I get no connection at all.
Any ideas? Is the phone toast? I am an experienced flasher, as I am coming from a galaxy nexus lte and am a crack flasher. Before each rom, I wiped data, cache, dalvik and system.
anyone have ideas? I am at a loss.
thanks
edit: I also noticed that on CM10 and AOKP the activation fails, and I can skip it. My phone number shows up as unknown but I have an IMEI number

*#*#4636#*#*
Change to CDMA/LTE Auto

I did that and I noticed no change. I only have 3g

SAME THNG!!
I have the same problem and can't seem to find a solution!!!!
I have two s3 and they both do the same thing!!!
dougmod said:
i did that and i noticed no change. I only have 3g
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e-zzy1 said:
I have the same problem and can't seem to find a solution!!!!
I have two s3 and they both do the same thing!!!
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Click to collapse
i had to get a new sim card. i went to the store and the new sim fixed it all

dougmod said:
i had to get a new sim card. i went to the store and the new sim fixed it all
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I'm having the same problem, I think. When I switch to an LTE option in phone info, it doesn't stay that option. it goes back to CDMA auto.
Can you just go to the verizon store and ask for a new one? Do they need to see your phone or anything like that, that will tell them its rooted?

raisins said:
I'm having the same problem, I think. When I switch to an LTE option in phone info, it doesn't stay that option. it goes back to CDMA auto.
Can you just go to the verizon store and ask for a new one? Do they need to see your phone or anything like that, that will tell them its rooted?
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Click to collapse
I was afraid and flashed back to stock before taking it in, but the sim card thing is common. so just say you were told by customer service to come in and get a new sim and they will set you up. if you dont feel like going to the store, customer service will overnight you one, pretty much no questions asked. so its no big deal

This is a common problem... i had it too with synergy 1.2. The phone info app was stuck gets stuck on cdma . I had to flash the stock image through odin and flash synergy again. No new sim cards are required
VERIZON GALAXY S 3

DROID3R said:
This is a common problem... i had it too with synergy 1.2. The phone info app was stuck gets stuck on cdma . I had to flash the stock image through odin and flash synergy again. No new sim cards are required
VERIZON GALAXY S 3
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after flashing back through odin, I still had only 3G

DROID3R said:
This is a common problem... i had it too with synergy 1.2. The phone info app was stuck gets stuck on cdma . I had to flash the stock image through odin and flash synergy again. No new sim cards are required
VERIZON GALAXY S 3
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When you do that, do you wipe all your data?

raisins said:
When you do that, do you wipe all your data?
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Check your baseband then head to
http://forum.xda-developers.com/showthread.php?t=1788313 then flash a different radio.. meaning if you running LF2 then flash LG1 and vice versa. After i changed the modem i boot up into 3g went into phone info and chose lte only and 4g turned on.
When it happened to me i was running synergy (LG1-radio)...jellybomb theme..so there must be an issue there . i think its the jellybomb theme since it was made for sprint users
VERIZON GALAXY S 3

e-zzy1 said:
I have the same problem and can't seem to find a solution!!!!
I have two s3 and they both do the same thing!!!
Click to expand...
Click to collapse
Pop up dialer, type *2767*3855#
and it will reset your 4G by fixing the SIM card - and immediately reboot. I've had the problem twice, and both times this key sequence fixed it. :highfive:

So a friend of mine was having the same issue. No 4G in an area I know he has full 4G signal. I reflashed the unrooted stock image in Odin (he was already stock, rooted, unlocked with cwm 6.xx) and still no dice. I tried flashing both radios, no dice. Also tried the dialing above to reset everything, nothing. Finally I gave up and told him to take it in into a store and they replaced the sim card and it worked! We then rerooted, unlocked, flashed cwm and all was good.
However, I asked him what all he had originally done after getting the phone so that we could try to take it step by step and see what caused it. I installed TiBu and lucky patcher as he had previously done (I don't condone pirating, espeically this great app but I wanted to try and recreate the issue) and it broke it, no 4G! I think the culprit was lucky patcher; I highly doubt TiBu could cause it as I have had no trouble with it. Only other rooted app he installed was adblock but again, I use this all the time with no troubles. I told him to just pay for the app! But I am still interested if anyone else might have had the same issue so we could try to prevent it for others? Any of you above who lost 4G did you by chance use lucky patcher?
Edit: Also, i noticed that I put the phone in 4G LTE only mode using phone info the 4G LTE symbol pops up but there are no signal bars. However, it appears as if there is signal since data speeds work fine and at normal LTE for this area so just the bars are screwed up, and then something with the hand off when switching back to normal off LTE only? Anyone else exeriencing this or have you tried to see if you actually have LTE even though you have no bars?

Same crap on my white 16gb gs3. Ridiculous data connections.
---------- Post added at 03:50 AM ---------- Previous post was at 03:42 AM ----------
I have a replacement coming. They sent it a week ago and I got it yesterday and they sent me a nexus. Maybe its a sign to go back to the good ol gnex. They resent a gs3 so if the new one doesn't fix it I'm going to keep the gnex they sent and cut my loss
Sent from my SCH-I535 using xda app-developers app

IMEI restored, still no data

Trying to help a friend who lost his IMEI (showed as 0), I restored it with the QPST method successfully. All the numbers are there and the IMEI is correct, but it still doesn't have data. I tried calling the number in the older efs backup thread to reprovision, and it didn't seem to do anything, but while I was messing around with it the icon popped up and I had one bar of 4G, but it disappeared after a few seconds. I'm out of ideas and I would greatly appreciate any help. Thanks!
Sent from my Incredible 2 using Tapatalk 2

Sorry to bump, but this is getting lost down here...
Sent from my Incredible 2 using Tapatalk 2

Have you used Odin to restore the stock rom?

con247 said:
Have you used Odin to restore the stock rom?
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I tried, but but it failed, and don't remember the exact message. It's just on root66 right now.
Sent from my Incredible 2 using Tapatalk 2

prototype7 said:
I tried, but but it failed, and don't remember the exact message. It's just on root66 right now.
Sent from my Incredible 2 using Tapatalk 2
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If on stock (root66 sounds) dial: *2767*3855#
Back up anything you may want on the internal storage before doing so. Should fix it if it's fixable.

This ^^^^.
I had lost mine also and followed the same instructions, got it all back, but no data return. You need to reprovision your phone by following the key sequence. I think you need to be stock to do it too (could be wrong). After doing that, all my stuff returned to 100% fully functional.

You definitely need to be on stock for it, though? What's it do specifically? I never outright lost my IMEI, but I did have a problem where data would intermittently cut out and it didn't display a phone number in the system info.
After a wipe and install it seemed to be okay, but now I'm without data. Phone number and all the other numbers are there, though. If I dialed that on CM10, what could I expect?

Zalithian said:
If on stock (root66 sounds) dial: *2767*3855#
Back up anything you may want on the internal storage before doing so. Should fix it if it's fixable.
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I already tried that, it didn't work. I just tried it again and it still didn't work, but I left it locked for a while and when I unlocked it, the 4G icon was there for a few seconds, and then went back to no signal and it hasn't come back.
Sent from my Incredible 2 using Tapatalk 2

prototype7 said:
I already tried that, it didn't work. I just tried it again and it still didn't work, but I left it locked for a while and when I unlocked it, the 4G icon was there for a few seconds, and then went back to no signal and it hasn't come back.
Sent from my Incredible 2 using Tapatalk 2
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Hmm if that doesn't work I'm not sure what else there is. Maybe a new SIM or phone, all I can think of

a new sim is needed, or you just have a data-bricked phone if that wont work... sorry bud

I'm not sure what it's doing, but I don't think it's unrecoverable. If I leave it for a while, when I unlock it I'll have a bit of 4G signal, then it disappears after a few seconds. I was able to use the browser while it had signal, but when I try to make a call it says "Mobile network unavailable." I did receive a few texts, I'll test sending them. Under Settings>About device>Status, all the numbers are there and everything looks normal except these:
Network - Searching for Service
Mobile network type - Unknown:0
Service state - Out of service
Mobile network state - Disconnected
Thanks for the help so far.
Sent from my Incredible 2 using Tapatalk 2

prototype7 said:
I'm not sure what it's doing, but I don't think it's unrecoverable. If I leave it for a while, when I unlock it I'll have a bit of 4G signal, then it disappears after a few seconds. I was able to use the browser while it had signal, but when I try to make a call it says "Mobile network unavailable." I did receive a few texts, I'll test sending them. Under Settings>About device>Status, all the numbers are there and everything looks normal except these:
Network - Searching for Service
Mobile network type - Unknown:0
Service state - Out of service
Mobile network state - Disconnected
Thanks for the help so far.
Sent from my Incredible 2 using Tapatalk 2
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Have him activate another phone on his account and then reactivate the s3. I'm not sure if this will help. It's only a theory really! If you decide to try please Let me know if it works. Thanks
Sent from my SCH-I535 using xda app-developers app

On mine, I restored to the Nandroid backup I made of the stock rom before switching and dialed the number mentioned before. That brought it back to out-of-the-box stock. Set it up, tested data, rooted, unlocked bootloader, installed CM10, tested data, restored apps, tested data, made another Nandroid backup, restored system apps and preferences, and everything's fine now.
My problem was really similar to that one, too. It started when the phone wasn't coming on when I pressed the home or power buttons, and after a battery pull it showed the phone number as "Unknown." A wipe and reinstall of CM10 showed all the correct numbers in the right places and seemed to fix it all, but data was back out in time. That was how it was every time I reinstalled that way; it'd work for a bit, then stop until I reinstalled again. Restoring my IMEI backup as a "just in case" hadn't helped either. Getting everything right again was arduous, but worth it.

Alright my dad has got a similar problem. He lost his IMEI before, we managed to get it restored and data working and all that good stuff. Well today he had to fly to Denver and put the phone into airplane mode, well when he came out of airplane mode it was stuck on roaming mode, and network is "Unknown" his IMEI, phone number, and all those numbers are correct but hes still stuck in roaming. We tried pulling the sim card, and going back to a root66 backup and then reprovisioning the phone. Any other ideas? Should he go back to complete 100% unrooted stock and then reprovision? Any help would be great

I've had the problem come back for me, so disregard my earlier post. I'm back on stock now with no data issues so far, so I'm going to sit on that for a bit to see if the problem is definitely with CM. It's been gradual every time I've fixed it; last time I lost LTE before 3G.

coldcaption said:
I've had the problem come back for me, so disregard my earlier post. I'm back on stock now with no data issues so far, so I'm going to sit on that for a bit to see if the problem is definitely with CM. It's been gradual every time I've fixed it; last time I lost LTE before 3G.
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are you on stock unrooted? or stock rooted?

Neverendingxsin said:
are you on stock unrooted? or stock rooted?
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Stock rooted. Gotta have my titanium backup!

coldcaption said:
Stock rooted. Gotta have my titanium backup!
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did you use odin to return to stock rooted? or just restore a nandroid?

Neverendingxsin said:
did you use odin to return to stock rooted? or just restore a nandroid?
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Click to collapse
Restored a Nandroid. LTE isn't working though, so I may dial *2767*3855# to go back to full stock and see if that fixes it. Currently 3G is still okay.

A question...
Those losing their IMEI numbers... Is this happening on the locked bootloader? Unlocked bootloader? Both?
I've been digging through the forums trying to ferret out a pattern, but it's not presenting itself to me. Maybe someone else has seen the pattern?

No service

I was on BMc's AOKP for about a month. The GPS was pretty crappy (universal problem I guess) so I flash the GPS fix posted in the dev section. This made my GPS worse, however the rest of my phone was still fine. Since I was going to flash a new ROM to get my semi-working GPS back, I decided to try something new so I flashed the newest stable build of paranoid android to try out hybrid. The phone booted up and then got stuck at activating, I just let it run through and it told me it couldn't activate blah blah blah. From that point on I was out of service. I flashed back to AOKP, still out of service. I Odin'd back to root66, this sent me into a bootloop. So I went though and Odin'd the bootchains -> root66 -> factory reset and the phone booted up just fine. However, I still don't have service. I do have 4g and I can receive text messages, I just can't make/receive calls or send text messages. Also, my IMEI and phone number are correct on my device. Here's a summary:
Reverted back to root66, locked bootloader
IMEI and phone number are intact
Have 4G internet, and can receive text messages
Cannot make or receive calls
can't send text messages
Is my SIM card borked? I'm not sure what else it could be. Thanks.

Have you tried having Verizon reset your account ?
Sent from my SGH-T999 using xda premium

funziebear said:
Have you tried having Verizon reset your account ?
Sent from my SGH-T999 using xda premium
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Not yet, I wanted to eliminate as many possibilities that could be attributed to flashing before I went to them. But if it is just a SIM issue I was going to have them reset it and see if it works.

majixx11 said:
Not yet, I wanted to eliminate as many possibilities that could be attributed to flashing before I went to them. But if it is just a SIM issue I was going to have them reset it and see if it works.
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Click to collapse
Have you try to Odin the stock Verizon ROM?
Sent from a SYNERGIZED GalaxySIII

epagib said:
Have you try to Odin the stock Verizon ROM?
Sent from a SYNERGIZED GalaxySIII
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I am downloading it now to try it. Takes me a couple hours to dl it on my school connection though Has about 25 mins left.

Hangs in 1x one very ROM after flashing 10.1

I've flashed back to every ROM I've had even tried flashing Odin back to stock root66 then resest with *2767*3855#
I might have 4g from get go about 5mins then it just hangs in 1x all day sometimes no data.
Is there a fix? If so what's the problem and how do I fix it?
Thanks
Sent from my SCH-I535 using Tapatalk 2

I have the same problem but I hang on 3G all day... areas that I know used to provide me with full 4G service no longer do. Just like you I've flashed back to numerous ROMs but I cannot get it to pick up 4G anymore.

Was it after a 10.1 update as well ?
Sent from my SCH-I535 using Tapatalk 2

It was. I actually just got back from the Verizon store and they gave me a new SIM and it fixed all of my problems. Give that a go and see if it helps you.

[Q] 4G LTE Not Working

Guys I've tried searching and tried damn near anything I can think of/find here on XDA and other sites.
Over the weekend I got a little sick of my GPS not locking on my Verizon Samsung Galaxy S3 SCH-I535. I was running CleanRom 7 and I believe I was on MB1 - I could be wrong on the basebad that I was on.
Anyways, after doing my normal reading to see what the latest and greatest things going on are I decided I wanted to do a complete wipe like I'd done in the past, update to MF1 firmware, update my radio to ML1, then put a fresh install of CleamRom 7 on there.
So I used to did a format of my external SD then a factory wipe/reset & cache wipe in CWR. I then went directly into Odin mode (Home Button/Volume Down/Power) and flashed the root66_VZW_I535VRBMA2.7z from this thread. I installed EzUnlocker and RomManager. I unlocked the phone, then flashed CWR. I first did a factory wipe/reset, I then flashed the MF1 firmware, followed by the ML1 radio, and finally Clean Rom 7.
Everything was fine except my 4G LTE would not turn on - 3G works fine but no 4G LTE. I've tried everything I could possibly think of. I've flashed to the prerooted MA2 linked above in Odin. I've tried the 2-3 suggestions in this thread, I've tried making my own APN settings, I've tried the thread which has links for people who are returning their phone to Verizon (plain jane stock). Nothing. All of those bring me the same result: Everything works perfectly fine, but the 4G LTE never shows up. It doesn't matter where I am - I know it is not a network outtage as people in the office have no issues and I always have a connection here and at home.
I've already ordered a new SIM card which should show up tomorrow but did I miss anything? I tried everything I could think of. As of right now I'm back at square one where I'd gone back to MA2, flashed MF1 + ML2 firmware, and back on Clean Rom 7. Stuck with 3G. Any suggestions?
Thanks!

Just Odin flashed the VRALG1 4.0 ICS to bring it back to stock found here in Section 5: http://forum.xda-developers.com/showthread.php?t=1762709. Still no luck.
Am I correct in saying when flashing that it is also flashing the modem/firmware? I want to make sure I'm not missing anything.

I had the same problem not too long ago. My issue was the PRL usually 4G PRL starts with 15xxx but if you go into settings-->about phone-->status you should check to see whether it is a 15xxx or 3xxxx. If the latter a new sim card should fix it right up.
Sent from my SCH-I535 using XDA Free mobile app

alamn8r said:
I had the same problem not too long ago. My issue was the PRL usually 4G PRL starts with 15xxx but if you go into settings-->about phone-->status you should check to see whether it is a 15xxx or 3xxxx. If the latter a new sim card should fix it right up.
Sent from my SCH-I535 using XDA Free mobile app
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FYI a new SIM cleared it right up.