I have and love my old GNex. I have had it rooted for a while and have been using CM10 and CM11. 4G has been added all over my area and the coverage is rather good. I am having some problems with the CM roms. CM11 I get no 4G and the 3G go in and out so much the phone is not useable. I went back to CM10.2 and I can get 4G again but the hand off to 3G just leaves me with signal bars and no data.
I have not tried going back to stock rooted but I will do that today if I can find the rom (link is dead here).
I have read and googled a bunch of different things and settings but which is correct?
When I enter *#*#4636#*#* What do I use as the preferred network type for Sprint??
What do I choose as the Network Mode in CM10.2?
I will start with this and if it still refuses to work properly I am just going to go back to stock. I need a usable phone more than I need a rom.
Thanks
Related
It is my first forum post and I believe I am posting it in the right section... I tried finding a similar problem to mine, but seemed to only find people that wanted to turn LTE off instead of on. The AT&T Galaxy S3 phone is rooted and I have gone between ics and jb roms and have gotten LTE to work every time. The problem is after I reboot the phone I lose LTE. I get 20+ up 10 down on LTE. After I loose LTE I get around 8 up 4 down.
I have tried.
1.) Re-installing a rom which gives me LTE until I reboot phone.
2.) I have tried installing modems from http://forum.xda-developers.com/showthread.php?t=1831898. If I have lost LTE after reboot, I can (9 out of 10) get LTE to work again after installing a modem. I lose it once I reboot the phone again though and am unable to flash a new modem to get LTE back to working and it won't unless I do 1.) again.
3.) I have made sure apn settings are on the correct pta lte setting. Usually most of the rom's have that already set to begin with.
4.) I have tried the *#2263# to change it to LTE. This WORKS and will reboot my phone into LTE everytime, but I lose being able to make phone calls, etc. From what I understand as well, I am unable to go to 3g/2g after settings LTE ALL and I don't want that either...
It is the only problem I have had with this phone. I notice a lot of times after I install a rom and reboot, it upgrades, and I lose LTE. I install a modem and get LTE back. I reboot phone normally without doing anything to the phone and it upgrades apps again and I lose LTE. That is the only conclusion I can come to as to why I lose LTE after reboot.
terminalerror said:
It is my first forum post and I believe I am posting it in the right section... I tried finding a similar problem to mine, but seemed to only find people that wanted to turn LTE off instead of on. The AT&T Galaxy S3 phone is rooted and I have gone between ics and jb roms and have gotten LTE to work every time. The problem is after I reboot the phone I lose LTE. I get 20+ up 10 down on LTE. After I loose LTE I get around 8 up 4 down.
I have tried.
1.) Re-installing a rom which gives me LTE until I reboot phone.
2.) I have tried installing modems from http://forum.xda-developers.com/showthread.php?t=1831898. If I have lost LTE after reboot, I can (9 out of 10) get LTE to work again after installing a modem. I lose it once I reboot the phone again though and am unable to flash a new modem to get LTE back to working and it won't unless I do 1.) again.
3.) I have made sure apn settings are on the correct pta lte setting. Usually most of the rom's have that already set to begin with.
4.) I have tried the *#2263# to change it to LTE. This WORKS and will reboot my phone into LTE everytime, but I lose being able to make phone calls, etc. From what I understand as well, I am unable to go to 3g/2g after settings LTE ALL and I don't want that either...
It is the only problem I have had with this phone. I notice a lot of times after I install a rom and reboot, it upgrades, and I lose LTE. I install a modem and get LTE back. I reboot phone normally without doing anything to the phone and it upgrades apps again and I lose LTE. That is the only conclusion I can come to as to why I lose LTE after reboot.
Click to expand...
Click to collapse
I am in the same boat as you. I can force LTE with *#*#4636#*#* and setting it to LTe only. But I lose phone calls and if I restart it goes back to WCDMA.
What rom are you using some roms don't have the late icon they have 4g instead. Also double check that you have the right lte apn enabled
Sent from my SGH-I747M using xda app-developers app
offwiththeface said:
What rom are you using some roms don't have the late icon they have 4g instead. Also double check that you have the right lte apn enabled
Sent from my SGH-I747M using xda app-developers app
Click to expand...
Click to collapse
Yea I realized that jb roms do not show 4g lte, they just show 4g. I check to see if I have LTE by doing going to the Settings->About Device-> Status and looking at Mobile network type... and/or a speed test as well.
I came from and tried these rom's
Year of The Dragon
Ariel.2.07 [2ETO][Aroma]
WanamLite Smooth,Stable & Battery
Right now I am on Stock TouchWiz Jelly Bean PORT (JellyBean 747 Milestone 3)
I have gotten LTE speeds on every single one of the roms until I reboot phone.
[Update- Best Solution So far]
I found that using the WanamLite Rom http://forum.xda-developers.com/showthread.php?t=1782732 enabled me to get LTE back fairly easy.
Everything is in the Settings->More Settings->Mobile Networks area.
1. I entered in a new Access point and just put Name: "pta" APN: "pta". You can fill out the rest like the MMSC, MMS proxy, etc but I did not need to.
2. Then went to Network Operators and waited for it to search for the networks (takes a minute or two). It showed up for me as two options being Maritime and AT&T. I selected Maritime and registered it. I was not able to register on AT&T and I don't even know what Maritime is. However,
3. I went to Network mode: Set it to GSM/HSPA/LTE(Auto mode). I get LTE every time.
Every time I reboot I can get LTE to work by doing steps 2.) and 3.) and is a little annoying, but better than having to flash a rom every time I reboot and lose LTE. I would like to try and find a solution though where I wouldn't have to do this every time I reboot.
[EDIT] There might be roaming charges, but by disabling Data roaming you should be fine. I believe you might incur charges if you try connecting to this network while on a cruise and have data roaming enabled. I have not done a lot of research on this so I could be wrong.
Hello xda. I need some help with my GS3 and LTE. I rooted my phone on day one and have moved from rom to rom. I live in the SF Ba. Area and they are turning LTE on. Using sensorly I found some LTE areas, but my phone won't connect. I have tried different roms: CM10, Paranoidandroid, Ktoonsez, and now Liquid. I started with radio LJ9 and am now on LJ7.
I hope someone can give me a few ideas on what to try next. I heard updating the PRL can help, but I don't know how to do that.
Sorry if I did a poor job of searching, I am on my tablet, on 3G, and I couldn't find much
To update your profile and prl (prl is for roaming and doesn't effect lte).
menu -> settings (scroll to the bottom) -> system updates -> update profile / update prl
I'd odin stock JB or ICS and test LTE that way.
Though all of the ROMs you listed should have perfectly working LTE.
good luck
I flashed back to a Odex stock, and updated my profile and prl (just incase). I still don't seem to get any LTE.
FinalStar said:
I flashed back to a Odex stock, and updated my profile and prl (just incase). I still don't seem to get any LTE.
Click to expand...
Click to collapse
Don't feel bad im goin thru the same thang had the phone four days rooted it the second day i had it NO LTE to date wtf sprints trippin
samsung GSIII rooted
I know! Don't you love paying 4G price for 3G service? Fo real!
Well I'm not 100 % on what fixed it but it suddenly started working. Speed seems a little slow. 5mbps up and down. Don't people get in the range of 10 to 20
FinalStar said:
Hello xda. I need some help with my GS3 and LTE. I rooted my phone on day one and have moved from rom to rom. I live in the SF Ba. Area and they are turning LTE on. Using sensorly I found some LTE areas, but my phone won't connect. I have tried different roms: CM10, Paranoidandroid, Ktoonsez, and now Liquid. I started with radio LJ9 and am now on LJ7.
I hope someone can give me a few ideas on what to try next. I heard updating the PRL can help, but I don't know how to do that.
Sorry if I did a poor job of searching, I am on my tablet, on 3G, and I couldn't find much
Click to expand...
Click to collapse
On CM10 (and all AOKP ROMs based on it) eHRPD authentication is not working right yet. I think they're close to a fix, but for right now, if you're in an area with a weak LTE signal; you're gonna have some problems
hey gang i'm running the latest aokp task650 build on my S3 I747m. Everything works awesome, except i occasionally lose my data connection. I'll notice my connection status bars are gray, and typically a reboot will fix it. I'm sure going into airplane mode and back out from that would re-establish the connection too.
my APN is set correctly, i compared it to a friends nexus which is not rooted.
Right now i'm set as pda.bell.ca
I've flashed the latest bell modem file (that i'm aware of).
Anyone have any suggestions? i'm pretty new to all of this.. not sure what to do to troubleshoot.
itrunner said:
hey gang i'm running the latest aokp task650 build on my S3 I747m. Everything works awesome, except i occasionally lose my data connection. I'll notice my connection status bars are gray, and typically a reboot will fix it. I'm sure going into airplane mode and back out from that would re-establish the connection too.
my APN is set correctly, i compared it to a friends nexus which is not rooted.
Right now i'm set as pda.bell.ca
I've flashed the latest bell modem file (that i'm aware of).
Anyone have any suggestions? i'm pretty new to all of this.. not sure what to do to troubleshoot.
Click to expand...
Click to collapse
I've been having problems lately when I have poor 4G (LTE) signal. My phone would rather hang around on the LTE network with little to no signal before it switches over to 3G. It's been doing this for a while on the Rogers network for me. I can see when I check the battery stats just how much time is spent without signal which is a lot. At work I get full bars 3G when at my desk but very poor 4G. The only thing causing me to loose signal is the poor transition back and forth between the two networks. Changing modems has absolutely no affect on this matter and I've put the APN's and network modes through the ringer with no change either. I've tried it all and nothing improved it. When I walk outside I immediately hit full bars 4G. Just when I'm inside my work and at home, I get poor lingering 4G. I wish the thresholds for when it switches over were better. I usually just turn off LTE all together which sucks but oh well.
I don't think we are the only people with this either. I've read grumblings about others noticing the same thing.
If curious, I'm running the latest CM10.1 nightly with Ktoonsez kernel on the Rogers network in Ottawa.
Interesting, that could very well cooincide with what i'm seeing. I tend to bounce from 4G to H+ or 3G, i wonder if it's trying to hang onto 4G.
Is there a way to force it to stay on 3G? that might be a good test
I was getting the same issue.
I did a factory reset and reinstalled my ROM plus GAPPs and the issue resolved itself.
I am using the latest modern right now and not my bell one. I think it's from a south American carrier, but bit 100% sure of the top of my head. But it is in the current modern thread
Sent from my SGH-I747 using xda app-developers app
Hi, it's been a while since I posted on the forums. I've had a problem with this for a while now, but never bothered to ask you all. i don't get certain types of signal with the stock rom and aosp roms. For stock, I get 4g data, and I am able to make calls while roaming but not while I am on regular 1x (connects but I can't use it). Also, signal is iffy, sometimes it connects/randomly disconnects. For aosp, I get almost no signal, only roaming. I think that I didn't mess up my efs folder, my imei is still the same as the DEX on the back of my phone. Do you guys know what is wrong or how to fix this? I want to be able to use my phone again...
What modem are you on? Firmware or ROM? I'm using NE2 with rwilco's stock ROM and a GSM sph-l900 with t-mobile... I get 3G and 4G (hsdpa+)... before I use to get lte/3g/1x and I use roam control when I'm in an area where I know I don't have a good signal...
I flashed the Lollipop version of Liquid Smooth on my AT&T G3 and at first everything was working fine, 4G included. After a couple of days 4G disappeared. When this happened it didn't just go to 3G, it lost all data service completely. I originally figured it was the ROM and flashed back to the previous ROM I had using the TWRP backup I made beforehand. Same story, no data service. Figured maybe it was the modem so I flashed a working G3 modem on here, same story. I flashed to a different Lollipop ROM, Resurrection, to see if that fixed anything, nope. This is the ROM I currently have installed. At this point I went and look at the mobile network options and immediately noticed 1 issue, the preferred service was 3G and not LTE. I had an option to change it to LTE but when I actually select LTE it doesn't actually switch, it just stays on 3G.
The one good thing I managed to do was switch the APN to one that worked with 3G. The APN that was originally set was "pta", I can provide the actual APN information if that'll be useful but I figure most ROMs are going to have similarly named APNs. 3G works on at least 2 of the APNs listed for this ROM, "broadband" and "wap.cingular".
I called AT&T and determined that I my 4G service wasn't cut off; not that I really thought it was anyway as that wouldn't explain why I can't even select 4G as a network type. I'm kind of at a loss as to how I just randomly lost 4G access without actually making any changes to the firmware or OS of the phone. I'm also at a loss of how I can get it back.
And I am just sitting here with 3G with speed of 2 Mbps...
No one has any ideas or advice?