[HELP] My phone constantly switches to CDMA and than has no signal - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

Hello I bought my phone off of ebay it was already flashed with tasks rom when I got it and the only problem I have which is very annoying is that it constantly switches from LTE/GSM/CDMA to CDMA only when I goto settings>more>mobile networks...Whenever there is no signal it is set to CDMA only I'm not sure what the problem is but its very frustrurating when I cant make calls when I need to...Is this a known problem? Will I have to revert back to stock?

n023b said:
Hello I bought my phone off of ebay it was already flashed with tasks rom when I got it and the only problem I have which is very annoying is that it constantly switches from LTE/GSM/CDMA to CDMA only when I goto settings>more>mobile networks...Whenever there is no signal it is set to CDMA only I'm not sure what the problem is but its very frustrurating when I cant make calls when I need to...Is this a known problem? Will I have to revert back to stock?
Click to expand...
Click to collapse
who is your carrier and what APNs are installed? also, you're in a GSM forum

xBeerdroiDx said:
who is your carrier and what APNs are installed? also, you're in a GSM forum
Click to expand...
Click to collapse
My carrier is Fido (GSM) its the same as at&t in the US or Rogers in Canada
By APNs do you mean Access Point Names? If so there are three options
Fido Default
fido-core appl1.apn which is the one I use since I use LTE
Fido Internet
internet.fido.ca
Fido tethering
isp.fido.apn

n023b said:
My carrier is Fido (GSM) its the same as at&t in the US or Rogers in Canada
By APNs do you mean Access Point Names? If so there are three options
Fido Default
fido-core appl1.apn which is the one I use since I use LTE
Fido Internet
internet.fido.ca
Fido tethering
isp.fido.apn
Click to expand...
Click to collapse
Fido's website says to use LTEMOBILE.APN if you have an LTE device
http://www.fido.ca/web/content/phonewarranty/configure_unlocked_device_guide&lang=en

xBeerdroiDx said:
Fido's website says to use LTEMOBILE.APN if you have an LTE device
http://www.fido.ca/web/content/phonewarranty/configure_unlocked_device_guide&lang=en
Click to expand...
Click to collapse
Just checked although its named after the core one it has the LTE settings I've been using LTE fine

Even though the settings were the same I still made a new profile for LTE and its having the same problems Sometimes toggling airplane mode or restarting the phone seems to fix it
Again the problem is that the phone constantly loses signal and the mobile network setting says "CDMA only" if I change it back to LTE/GSM/CDMA sometimes the signal will come back

n023b said:
Even though the settings were the same I still made a new profile for LTE and its having the same problems Sometimes toggling airplane mode or restarting the phone seems to fix it
Again the problem is that the phone constantly loses signal and the mobile network setting says "CDMA only" if I change it back to LTE/GSM/CDMA sometimes the signal will come back
Click to expand...
Click to collapse
the fact that your gsm device has built in options for cdma and consistently tries switching to cdma (which is probably why you lose service) tells me something needs to change. on your i747m, what is your baseband version? also, what is your android/task650 release?

xBeerdroiDx said:
the fact that your gsm device has built in options for cdma and consistently tries switching to cdma (which is probably why you lose service) tells me something needs to change. on your i747m, what is your baseband version? also, what is your android/task650 release?
Click to expand...
Click to collapse
I can't believe I forgot to mention what kind of phone it was its not the Canadian model... I bought the phone off of ebay it is an at&t SGH-I747 the phone already had the custom rom on it when I got it.
The baseband version is i747UCDLK3
Kernel version:
30.0.68-underwear kernel
[email protected] #1
Sun Mar 10
AOKP version
d2att (4.2.2 jdq39) build 3.10.2013

n023b said:
I can't believe I forgot to mention what kind of phone it was its not the Canadian model... I bought the phone off of ebay it is an at&t SGH-I747 the phone already had the custom rom on it when I got it.
The baseband version is i747UCDLK3
Kernel version:
30.0.68-underwear kernel
[email protected] #1
Sun Mar 10
AOKP version
d2att (4.2.2 jdq39) build 3.10.2013
Click to expand...
Click to collapse
oh wow, so you literally just bought that on ebay. unfortunately, when buying a device thats already rooted and running a custom ROM, you dont know the procedures used when that ROM was installed. there's a wrong and right way to do it so as to have a smooth running phone with little or no complications. I would make a backup in recovery and then try a different modem or reflash the ROM and google apps (gapps) again. is the ROM and gapps files (.zips) still on the phone?

xBeerdroiDx said:
oh wow, so you literally just bought that on ebay. unfortunately, when buying a device thats already rooted and running a custom ROM, you dont know the procedures used when that ROM was installed. there's a wrong and right way to do it so as to have a smooth running phone with little or no complications. I would make a backup in recovery and then try a different modem or reflash the ROM and google apps (gapps) again. is the ROM and gapps files (.zips) still on the phone?
Click to expand...
Click to collapse
I updated the rom the other day and had to reinstall gapps so yes I'll try flashing other radios.
I went to *#*#4636#*#* and set the radio to GSM/LTE and the phone still drops the signal and doesnt change to WDCDMA...
Edit: Update it will switch to WCDMA

n023b said:
I updated the rom the other day and had to reinstall gapps so yes I'll try flashing other radios.
I went to *#*#4636#*#* and set the radio to GSM/LTE and the phone still drops the signal and doesnt change to WDCDMA...
Click to expand...
Click to collapse
when you updated, did you perform a full wipe? that might fix this whole issue

xBeerdroiDx said:
when you updated, did you perform a full wipe? that might fix this whole issue
Click to expand...
Click to collapse
Yes I did the full wipe, cache wipe, and dalvik cache wipe.. It still has the same problem after I reflashed I'm going to try and flash different radios now.
If that doesn't work whats the next step reverting back to stock and seeing if that works?

n023b said:
Yes I did the full wipe, cache wipe, and dalvik cache wipe.. It still has the same problem after I reflashed I'm going to try and flash different radios now.
If that doesn't work whats the next step reverting back to stock and seeing if that works?
Click to expand...
Click to collapse
Did you format /system?

try unrooting and going back to stock then rerooting.
That worked for me

xBeerdroiDx said:
Did you format /system?
Click to expand...
Click to collapse
Yes I believe I did I went to the official thread and did what it said there
f_E_a_R_e_D said:
try unrooting and going back to stock then rerooting.
That worked for me
Click to expand...
Click to collapse
I'll try that but weird thing...I remember reading somewhere too many open apps may cause signal problems and I just killed all open apps when the signal dropped and about 15 secs later signal was back dont know if this was the problem for sure I'll try again if it happens see if maybe I can narrow it down to a particular app or process

Related

[Q] Cellular network download issue

Here's the problem.
I installed many roms and kernels on my gnex since i bought it. Lately i came across a strange problem. If i install codename android, gummynex or foxhound with any kernel or radio i'm unable to download over cellular network. If i install android revolution hd or cyanogenmod 9 nightly its work even if i change the kernel or radio ??
Now when i say it doesnt download...my signals bar are max out on hspa+ but it aint blue, its gray. Usually when there is activity an arrows appears to show it. In my case case i only see the up arrow. I also when look under the *#*#4636#*#* menu and i data being uploaded but download is a 0. Ping test didnt work. Signal strength is around -85db. Preferred network is set to GSM/CDMA auto (PRL). I also tried to change it to GSM auto (PRL) and GSM only without success. I played with airplane mode. I tried turning on and off cellular data. Nothing works.
For now I'm on CyanogenMod 9 Nightly Build with Franco Kernel 16.2 and Gaaps 4.0.4 with XXKL1 radio. I have a Bell GSM Galaxy Nexus and my carrier is Rogers.
Does anyone have an idea of to fix it ?
P.S. I tried to wipe data/cache + dalvik + system.
I'd check your APN settings - sounds like some ROMs have the right ones, while the others may not.
Settings --. More --> Mobile networks --> Access Point Names
You can google around for the correct APN settings for Rogers. Here's the first hit I found: http://www.nexusoneforum.net/forum/...gers-wireless-apn-settings-data-mms-here.html
Thx a lot ! It worked ! Thx for your quick reply : )
Thnx since the OP didnt.
Bumping this.
This is my exact issue on T-mo USA. On nearly all radios, that is if I get a signal at all. Upload only no download. I've tried AOKP, Rooted deodexed icl53f, Slim, Liquid. Problem persists. What really chaps my ass is that it came with xxkk6 and now that one has no signal bars at all......
At least I can still make calls and send messages with no download radios.
your APN settings are wrong. read the how in this thread
I have apn set to these settings:
http://forum.xda-developers.com/showpost.php?p=21630221&postcount=1
Which are the same ones generated by using the "Reset to default" option. And what are listed in numerous other sources.
It sounds more like a firmware or hardware issue than an APN problem to me. You've said you tried a few different radio firmwares - have you tried UGLA4? I've had really nice results on T-Mobile US with that.
I'd try loading up the factory image with UGLA4 and see if that works for you. If that still doesn't play nice, you may need to look into getting a replacement.
codesplice said:
It sounds more like a firmware or hardware issue than an APN problem to me. You've said you tried a few different radio firmwares - have you tried UGLA4? I've had really nice results on T-Mobile US with that.
I'd try loading up the factory image with UGLA4 and see if that works for you. If that still doesn't play nice, you may need to look into getting a replacement.
Click to expand...
Click to collapse
Thanks for the info. Is there by chance an odin flashable for the GSM icl53f? I keep only returning hits for the CDMA version.
JediDru said:
Thanks for the info. Is there by chance an odin flashable for the GSM icl53f? I keep only returning hits for the CDMA version.
Click to expand...
Click to collapse
Not for ODIN, but you can get the official Google factory image here: https://dl.google.com/dl/android/aosp/yakju-icl53f-factory-89fccaac.tgz
You can extract it and flash the "image-yakju-icl53f.zip" file in fastboot:
Code:
> fastboot flash update -w image-yakju-icl53f.zip
I was able to restore but on xxkk6 I have no signal to speak of. Will have to go the Samsung route. The postal service has already lost one $350 dollar phone this month. So I'm very hesitant to be honest.
Sent from my Galaxy Nexus using xda premium

Bad signal or No service after flashing

Hi there. My device is a i747 on Virgin Mobile (Bell) in Canada. I have no service, or 1 bar of signal (can't make calls at all).
I flashed CM10 in November. Then just the other day I flashed Synergy. Then switched to Galaxy Mod. (I followed instructions for each flash, wiped everything each time etc. even when not specified in the instructions)
Today I switched to CyanogenMod 10.1, I got stuck in a boot loop. So I reflashed back to a stock root image with Odin (root66.stock_Bell_I747MVLALH1.tar). Now I have no service! I can see one signal bar. Under status it says VIRGIN.
EDIT: Now after I typed that, I reflashed another rooted stock image, I have no service at all and IMEI shows as 0.
EDIT: Since posting I have restored my IMEI, the phone seems to be registered on the network. But still no signal just like before
EDIT: March 16: I have tried flashing modems. Then I restored to the latest actual stock (non-rooted) image from my carrier. Same thing.
Please help me out, thanks
flyingpants said:
Hi there. My device is a i747 on Virgin Mobile (Bell) in Canada. I have no service, or 1 bar of signal (can't make calls at all).
I flashed CM10 in November. Then just the other day I flashed Synergy. Then switched to Galaxy Mod. (I followed instructions for each flash, wiped everything each time etc. even when not specified in the instructions)
Today I switched to CyanogenMod 10.1, I got stuck in a boot loop. So I reflashed back to a stock root image with Odin (root66.stock_Bell_I747MVLALH1.tar). Now I have no service! I can see one signal bar. Under status it says VIRGIN.
EDIT: Now after I typed that, I reflashed another rooted stock image, I have no service at all and IMEI shows as 0.
EDIT: Since posting I have restored my IMEI, the phone seems to be registered on the network. But still no signal just like before
Please help me out, thanks
Click to expand...
Click to collapse
After restoring your imei make sure your apn settings are correct.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
KorGuy123 said:
After restoring your imei make sure your apn settings are correct.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Hello.
I just travelled by train and it picked up signals, both voice and data. Possibly because i was passing close to a cell tower. But it quickly stopped working whenever the train moved too far from a cell tower.
Then back to no signal at all.
Will check APNs, but I don't think it would start working then stop if it were a configuration issue.
flyingpants said:
Hello.
I just travelled by train and it picked up signals, both voice and data. Possibly because i was passing close to a cell tower. But it quickly stopped working whenever the train moved too far from a cell tower.
Then back to no signal at all.
Will check APNs, but I don't think it would start working then stop if it were a configuration issue.
Click to expand...
Click to collapse
That sounds like a modem issue.
BWolf56 said:
That sounds like a modem issue.
Click to expand...
Click to collapse
Yes, the modem is not working properly. Should I flash another modem or what? Thanks.
APN is set correctly.
flyingpants said:
Yes, the modem is not working properly. Should I flash another modem or what? Thanks.
APN is set correctly.
Click to expand...
Click to collapse
Yeah, sorry wasn't all too clear. I replied in a rush.
Go in the modem thread and look for modems for your carrier and start by flashing their latest.
BWolf56 said:
Yeah, sorry wasn't all too clear. I replied in a rush.
Go in the modem thread and look for modems for your carrier and start by flashing their latest.
Click to expand...
Click to collapse
Hi there, what do you mean by "the modem thread"? I looked around a bit but I cant find it.
flyingpants said:
Hi there, what do you mean by "the modem thread"? I looked around a bit but I cant find it.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1831898
BWolf56 said:
http://forum.xda-developers.com/showthread.php?t=1831898
Click to expand...
Click to collapse
I tried the latest modem for i747M from the thread and it didn't work, same stuff is happening. I will keep trying them. Anything else I can try if that doesn't work?
flyingpants said:
I tried the latest modem for i747M from the thread and it didn't work, same stuff is happening. I will keep trying them. Anything else I can try if that doesn't work?
Click to expand...
Click to collapse
I tried about 4-5 so far. Didn't work. It's the same result. I'm not able to make any calls, it either shows 1 bar or No service.
So far I have set APNs, updated IMEI, and reflashed modems. When I get home I'm going to try more stuff.
BWolf56 said:
Yeah, sorry wasn't all too clear. I replied in a rush.
Go in the modem thread and look for modems for your carrier and start by flashing their latest.
Click to expand...
Click to collapse
flyingpants said:
I tried the latest modem for i747M from the thread and it didn't work, same stuff is happening. I will keep trying them. Anything else I can try if that doesn't work?
Click to expand...
Click to collapse
flyingpants said:
I tried about 4-5 so far. Didn't work. It's the same result. I'm not able to make any calls, it either shows 1 bar or No service.
So far I have set APNs, updated IMEI, and reflashed modems. When I get home I'm going to try more stuff.
Click to expand...
Click to collapse
Hi there, I just flashed this file from Samsung-updates.com using Odin. It is 4.1.1 from my carrier.
KIES_HOME_I747MVLDLK4_I747MOYCDLK4_538866_REV04_user_low_ship.tar.md5
Then I did a factory reset from inside Touchwiz. What should I try next?
I tried flashing another image: KIES_HOME_I747MVLALE8_I747MOYCALE8_20120523.225040_REV04_user_low_ship.tar.md5
and doing the factory reset code *2767*3855#. Didn't work, still have no signal in general.

t989 no service no network registered after flashing alpha 1 cm10

I don't have any service at all i can't register to any network i've tried going back to stock unrooting everything
tdt1345 said:
I don't have any service at all i can't register to any network i've tried going back to stock unrooting everything
Click to expand...
Click to collapse
Ummm... do you mean CM10.2 Alpha1? Because otherwise you're sooooo far back on CM revs it's not worth it (latest stable is 10.1.2).
Either way, make sure you're at UVMC6 baseband/radio -- non-JB radios don't work on CM10+ (JB) -- and you get what your phone is experiencing; no cellular network service (WiFi should be OK).
Sicily1918 said:
Ummm... do you mean CM10.2 Alpha1? Because otherwise you're sooooo far back on CM revs it's not worth it (latest stable is 10.1.2).
Either way, make sure you're at UVMC6 baseband/radio -- non-JB radios don't work on CM10+ (JB) -- and you get what your phone is experiencing; no cellular network service (WiFi should be OK).
Click to expand...
Click to collapse
Yes that's what I mean I flashed the UVMC6 Baseband/radio still no service I'm back at stock everything no service still
tdt1345 said:
Yes that's what I mean I flashed the UVMC6 Baseband/radio still no service I'm back at stock everything no service still
Click to expand...
Click to collapse
That's bizarre... you're not even rooted anymore, I take it? Did you do a full factory wipe after going to stock ROM (it's probably redundant, but what the hell)?
There's one other possibility -- it happened on my BlackBerry a few years ago and I got a strange error (dunno if Android gives that sort of error or where) -- basically, I had a bad SIM that still worked (it just couldn't connect, but the phone saw it as a normal SIM). I replaced it, called T-Mo and gave them the new SIM number (you can do it online nowadays) and was back up and running in minutes.
Of course, try pulling out the battery, SIM, and SD card, then put everything back in and power on...
Sicily1918 said:
That's bizarre... you're not even rooted anymore, I take it? Did you do a full factory wipe after going to stock ROM (it's probably redundant, but what the hell)?
There's one other possibility -- it happened on my BlackBerry a few years ago and I got a strange error (dunno if Android gives that sort of error or where) -- basically, I had a bad SIM that still worked (it just couldn't connect, but the phone saw it as a normal SIM). I replaced it, called T-Mo and gave them the new SIM number (you can do it online nowadays) and was back up and running in minutes.
Of course, try pulling out the battery, SIM, and SD card, then put everything back in and power on...
Click to expand...
Click to collapse
The sim works in different phones just not this one
The phone is blacklisted....
Sent from my SGH-T989 using xda app-developers app
[email protected] said:
The phone is blacklisted....
Sent from my SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
how it worked before I flashed cm10

[Q] Lost LTE after switching to KitKat

I decided to give Kit Kat another try a few days ago, but since then I have not been able to connect to LTE.
Prior to flashing I was running CM10.2 and my LTE was working fine. I initially lost LTE when I flashed PACMAN. I have also tried AOSB/ProBAM and Beanstalk. None of the Kit Kat roms gave me LTE so I gave up and restored CM10.2, but afterward I was still not getting any LTE connection.
I tried flashing the MD4 modem, but that didn't seem to fix anything. I've also heard that going back to stock could help, but I'd rather not have Knox if I don't have to use it. Which stock ROM here on XDA would be the best (Not planning on using the ROM. I just want LTE and then will flash back to Kit Kat)? Would a different modem fix my LTE issues? Is MK3 better than MD4, or are there any newer modems I should try?
Thanks for the help!
snak1e said:
I decided to give Kit Kat another try a few days ago, but since then I have not been able to connect to LTE.
Prior to flashing I was running CM10.2 and my LTE was working fine. I initially lost LTE when I flashed PACMAN. I have also tried AOSB/ProBAM and Beanstalk. None of the Kit Kat roms gave me LTE so I gave up and restored CM10.2, but afterward I was still not getting any LTE connection.
I tried flashing the MD4 modem, but that didn't seem to fix anything. I've also heard that going back to stock could help, but I'd rather not have Knox if I don't have to use it. Which stock ROM here on XDA would be the best (Not planning on using the ROM. I just want LTE and then will flash back to Kit Kat)? Would a different modem fix my LTE issues? Is MK3 better than MD4, or are there any newer modems I should try?
Thanks for the help!
Click to expand...
Click to collapse
Any of the ROMS that have [TW] in the title should work. Full Knox only comes with flashing a tar file in ODIN, because your flashing every partition of the phone. Modified stock ROM zips do not have knox, unless otherwise noted. Make sure to do a prl and profile update when you flash to stock.
sent from my Gs3
joeyhdownsouth said:
Any of the ROMS that have [TW] in the title should work. Full Knox only comes with flashing a tar file in ODIN, because your flashing every partition of the phone. Modified stock ROM zips do not have knox, unless otherwise noted. Make sure to do a prl and profile update when you flash to stock.
sent from my Gs3
Click to expand...
Click to collapse
Flashed Wicked Sensations last night with the MK3 modem and I seemed to be getting LTE as soon as that booted. Updated my PRL and Profile, and then wiped. Installed AOSB again, and I seemed to be getting LTE until I rebooted. After the first reboot I seem to be stuck in 3G again.
Im currently running AOSB on 2 devices. When I first flashed them, I had the same issue until I rebooted the phone. After that I never had this issue again.
sent from my Gs3
joeyhdownsouth said:
Im currently running AOSB on 2 devices. When I first flashed them, I had the same issue until I rebooted the phone. After that I never had this issue again.
sent from my Gs3
Click to expand...
Click to collapse
I think that's the opposite of what happened to me. My status bar said I had LTE when I first booted AOSB (this was after flashing/wiping TW). After the first reboot it connected to 3G and I haven't seen the LTE signal since.
I have updated the APNs, but I was using the same APNs for a while and had LTE on CM10.2 with them.
snak1e said:
I think that's the opposite of what happened to me. My status bar said I had LTE when I first booted AOSB (this was after flashing/wiping TW). After the first reboot it connected to 3G and I haven't seen the LTE signal since.
I have updated the APNs, but I was using the same APNs for a while and had LTE on CM10.2 with them.
Click to expand...
Click to collapse
This is something wierd with Kitkat. I do not believe a fix has been found just yet. but if you dial *#*#info#*#* on most phones you can get into the phone systems and turn LTE back on.
ShrekOpher said:
This is something wierd with Kitkat. I do not believe a fix has been found just yet. but if you dial *#*#info#*#* on most phones you can get into the phone systems and turn LTE back on.
Click to expand...
Click to collapse
I didn't know about this menu. Thanks for that. I went into Phone Info and tried selecting LTE only but it didn't connect to anything. Not sure what that means. There are other
There are some other options in there for networks (e.g. TD-SCDMA, CDMA auto). Would any of them help picking up Sprint LTE?
Other options include:
Turn off radio, CellInfoListRate
Turn on IMS registration required
Turn on SMS over IMS
Turn on lte ram dump
SMSC:_____________ Update Refresh
snak1e said:
I didn't know about this menu. Thanks for that. I went into Phone Info and tried selecting LTE only but it didn't connect to anything. Not sure what that means. There are other
There are some other options in there for networks (e.g. TD-SCDMA, CDMA auto). Would any of them help picking up Sprint LTE?
Other options include:
Turn off radio, CellInfoListRate
Turn on IMS registration required
Turn on SMS over IMS
Turn on lte ram dump
SMSC:_____________ Update Refresh
Click to expand...
Click to collapse
KitKat roms are currently having data issues. You could try backing up your current KK rom and go back to Stock, update prl and backup your DNS settings then go back to your backed up KK rom and restore from the dns settings you backed up.
How does one downgrade from kitkat to jellybean? I tried to just flash a jellybean ROM with a clean install and got an error?
Sent from my SPH-L710 using Tapatalk
TheManiac said:
How does one downgrade from kitkat to jellybean? I tried to just flash a jellybean ROM with a clean install and got an error?
Sent from my SPH-L710 using Tapatalk
Click to expand...
Click to collapse
What error ad you getting exactly?
Sent from my SPH-L710 using Tapatalk
djpabz23 said:
What error ad you getting exactly?
Sent from my SPH-L710 using Tapatalk
Click to expand...
Click to collapse
It says something to do with missing a partition?
Sent from my SPH-L710 using Tapatalk
snak1e said:
I decided to give Kit Kat another try a few days ago, but since then I have not been able to connect to LTE.
Prior to flashing I was running CM10.2 and my LTE was working fine. I initially lost LTE when I flashed PACMAN. I have also tried AOSB/ProBAM and Beanstalk. None of the Kit Kat roms gave me LTE so I gave up and restored CM10.2, but afterward I was still not getting any LTE connection.
I tried flashing the MD4 modem, but that didn't seem to fix anything. I've also heard that going back to stock could help, but I'd rather not have Knox if I don't have to use it. Which stock ROM here on XDA would be the best (Not planning on using the ROM. I just want LTE and then will flash back to Kit Kat)? Would a different modem fix my LTE issues? Is MK3 better than MD4, or are there any newer modems I should try?
Thanks for the help!
Click to expand...
Click to collapse
ohhh i had this issue but i figured it out for pacman and most roms just download nova launcher and when you do create a shortcut on nova ad click on setting an it should say apn once there u open it and youll see where it says ehprd something like that click on it and go all the way to the bottom and change where it says bearer to ehrpd and lte should work ^_^
Ok so I finally got it working, although I'm not sure what was wrong with everything in the first place. My buddy said Cyanogenmod screwed up a recent ROM, so maybe that code was in one of the ROMs I was using.
Each time I flashed back to TouchWiz (I ended up using Wicked Sensations) I could get 4G/LTE. I ran a **72786*, did a PRL & profile update. Prior to finding a working ROM, when I went back to BeanStalk/PACMAN I would lose LTE. After I found the updated BeanStalk ROM I flashed and it still had LTE! Happy days!
At this point I was able to send MMS somehow, but phone was having problems being recognized by the network. I could connect to LTE but couldn't use the data. After I updated the APNs everything started working again.
snak1e said:
Ok so I finally got it working, although I'm not sure what was wrong with everything in the first place. My buddy said Cyanogenmod screwed up a recent ROM, so maybe that code was in one of the ROMs I was using.
Each time I flashed back to TouchWiz (I ended up using Wicked Sensations) I could get 4G/LTE. I ran a **72786*, did a PRL & profile update. Prior to finding a working ROM, when I went back to BeanStalk/PACMAN I would lose LTE. After I found the updated BeanStalk ROM I flashed and it still had LTE! Happy days!
At this point I was able to send MMS somehow, but phone was having problems being recognized by the network. I could connect to LTE but couldn't use the data. After I updated the APNs everything started working again.
Click to expand...
Click to collapse
How did you update your APN's?
try switching to philz touch recovery where it will give you 2 options....do clean to install a new rom.....if works....thks appreciated...safe flashing and live prosperous
djpabz23 said:
How did you update your APN's?
Click to expand...
Click to collapse
This should work http://forum.xda-developers.com/showthread.php?t=1794956

Can't make calls out (Random only on network mode WCDMA/GSM (Auto Connect)

Hi.
I have a Samsung Galaxy S3 T999 model on carrier T-mobile. Lately the phone has gone nuts and will get stuck on dialing out and will never make the call. Everything else works fine. Sometimes I have to soft reset, pull the battery and that will fix it for a call or two, then it will get stuck again. I have contacted T-mobile about this over 5 times and none of them can help. We tried to change the sim, reset the account. Etc and nothing. I have reset the cache, factory reset and even put in a good working sim card from another phone and the same problem comes up. During my latest troubleshooting I have narrowed it down to where I switch "network mode" to GSM only and that can make calls out all the time, but the data stays on E (which then I can't use the internet because it's so slow) When I switch back to auto I am sometimes able to place calls again, but only a few. After I test a few calls and leave the phone for a few minutes the phone will get stuck back on not making calls out and just saying "dialing".
Has anyone had the same problems or know of a fix? Currently I have been trying to flash the modem to different versions to see if that fixes the problem. The first two modems I have flashed did not work and came up with "unknown baseband".
If anyone can help I greatly appreciate it.
This is a known issue with 4.3.. What firmware are you on? Assuming you flashed the correct baseband for your device, the 'unknown baseband' message sounds like you are in 4.3 but what build? You can't flash any modems successfully less than 4.3
Sent from my SGH-M919 using Tapatalk
serio22 said:
This is a known issue with 4.3.. What firmware are you on? Assuming you flashed the correct baseband for your device, the 'unknown baseband' message sounds like you are in 4.3 but what build? You can't flash any modems successfully less than 4.3
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
I was previously on 4.1.2 when the problem first started. I updated it to 4.3 and still the same problem.
jss15j.t999uvuenc2 build. (I put this one back on last night so at least I can use the phone today when I am at work)
I was just hoping that the device didn't go bad when it was on 4.1.2 because it was working just fine before the problem started.
Was it official update to NC2 by OTA/Odin or you just flashed a ROM?
Sent from my SGH-M919 using Tapatalk
serio22 said:
Was it official update to NC2 by OTA/Odin or you just flashed a ROM?
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
NC2 was OTA. After doing some searches it said that OTA could of been corrupt, so I went and downloaded KIES and did a reinstall that way.
When I upgraded to 4.3 I tried that default baseband out and had the same problems. That is when I was searching on google and came across this forum and also the thread about flashing modems.
What APN (Access Point Name) are you on ? Also what is your Preferred Network Type set to ? Its located in Settings > More I think.(I don't use Stock Firmware)
Perseus71 said:
What APN (Access Point Name) are you on ? Also what is your Preferred Network Type set to ? Its located in Settings > More I think.(I don't use Stock Firmware)
Click to expand...
Click to collapse
APN is epc.tmobile.com
Network Mode current set to GSM (the only way I can make calls out without the problem occuring)
WCDMA/GSM (Auto Connect) is what it should be on so my data is at 4G, but the calls is the problem here
I am not sure but can you check the settings of the Dialer to see if there is ways to choose Lookup providers ?
Perseus71 said:
I am not sure but can you check the settings of the Dialer to see if there is ways to choose Lookup providers ?
Click to expand...
Click to collapse
Nope don't see anything in the dialer about selecting a provider..
Its supposed to be something about Choose Lookup Providers. At least that's the way it is on AOSP.
I suggest Odin flashing the stock NC2 firmware and then factory resetting from stock recovery. (Backup first of course!) If it is still an issue, it will most likely be a hardware problem. From what you have said so far, I believe that you will find this to be the case. Could've been due to damage from a drop, or even overheating at some point. Or it could just be that its simply due to hardware degradation over time.

Categories

Resources