Signal/Data problems help please!!! - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

I have flashed a custom aosp ROM(paranoid android) and now I'm having signal problems and I have no signal what so ever in areas where I had LTE before. Please help. I have also tried flash other ROM and the problem still occurs.
Sent from my SPH-L720 using Tapatalk

Go back to stock and do ##72786# and try to flash again see if that works.
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Or you could just do what so many other android device users do and cut your losses, choosing a rom that works over one that almost works . I have always had weird signal problems with most CM roms.

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wi-fi problem

Hv this serious issue of wi-fi connectivity on my i9500. The phone should automatically connect to the predefined network but it does not. Have to manually connect it after every few minutes. This problem was also faced when it was on offical rom and the problem still persists even when I have flashed Arrow v8.0 rom.
Have no wifi issues on other samsung devices and apple products on the same network. And as per the dealer there's no problem with the phone.
Need help to fix this problem.
I suggest you do a clean wipe and install another official rom to see which this is going. I only experienced that when i was on a custom rom but got it fixed by replacing some files
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saywhatt said:
I suggest you do a clean wipe and install another official rom to see which this is going. I only experienced that when i was on a custom rom but got it fixed by replacing some files
Sent from my GT-I9505 using XDA Premium 4 mobile app
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Thanks. Had the same problem with official samsung rom. maybe i would flash another custom rom and see if the problem still persists.
Thanks again.

Anyone here can recommand a kernel that can strongly improve 3G signal

Hi, after I flashed a 4.3 rom(Omega). I find out that 3G signal is not very well. Today I can not receive any phonecall if I set ONLY CDMA. This issue did not happen when I use 4.12 rom. So I think it may be caused by kernel. The current kernel version is N7100DDEMK1.. Please help. Many thanks
Try another modem....
But backup efs before
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Try another modem
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Lost mobile signal!

I'm running sacs rom. And last night sometime I lost my mobile signal. I'm unable to make any calls and have no Internet. And yes I paid my bill. If someone could point me in the right direction it would be greatly appreciated
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Does it show no signal bars and has a red X in it?
I had this on stockish v4 two days ago while I was messing around with random files. I was able to solve it by dirty flashing the ROM again. Then connecting to WiFi and updating profile.
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No. I don't have anything. I even did a clean install of newest rom. I connect via wifi and I get a preparing network and searching for service.
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Okay so I figured out that my radios suddenly disappeared. I tried flashing the latest radios through Oden with a pass. But they are not sticking. Any ideas?
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loumoli said:
Okay so I figured out that my radios suddenly disappeared. I tried flashing the latest radios through Oden with a pass. But they are not sticking. Any ideas?
Sent from my SM-N900P using xda app-developers app
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You'd need to flash the exact same modem as you had before, however it makes no sense that the modem would just disappear.... Are you sure nothing happened?
loumoli said:
No. I don't have anything. I even did a clean install of newest rom. I connect via wifi and I get a preparing network and searching for service.
Sent from my SPH-L720 using xda app-developers app
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You can try calling Sprint have them reset service or if you have insurance on it take to sprint store, you may have to take it in as stock unrooted. My S4 was doing same thing, but I didn't have insurance on it, so had to send (unrooted) in for warranty service through Samsung to have it fixed.
sent from nowhere

Auto Rotate problem

I was with Kitkat German, and suddenly - when I tried to rotate the screen, he also turns around, but he did not turn around right .. and the camera takes pictures upside down, even when I went back to -4.2.2 same thing and not solved ..
Access Warranty?
UP
It's the kitkat modem that messes up the auto-rotate and some other things, have you tried downgrading the modem if possible? Download a flashable zip for the previous modem and flash it via recovery.
Link please for old modem?
thanks.
I'm currently having the same problem. The old modems are not working.
Sent from my VS980 4G using Tapatalk
I installed the old modem and now the screen does not turn around at all.
You need a Kitkat baseband for a Kitkat ROM!
Some folks reported that recalibrating the gyro helps.
robogo1982 said:
You need a Kitkat baseband for a Kitkat ROM!
Some folks reported that recalibrating the gyro helps.
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I can't recalibrate it. The settings app force closes if I try too.
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I would prefer flashing the rom new and to not mess up with different basebands.
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Like I said, I tried to go back to 4.2.2 and it's not resolved.
and after I installed the old modem, the auto brightness not working..
2 issues at now =\
Did u a hard reset after flashing ith lg recovery tools?
If yes maybe a hardware problem.
What was ur last rom where it worked?
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theefim said:
Did u a hard reset after flashing ith lg recovery tools?
If yes maybe a hardware problem.
What was ur last rom where it worked?
Sent from my LG-D802 using XDA Premium 4 mobile app
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What is hard reset and lg recovery tools?
last rom: 4.2.2 Stock is working fine, I can try to back to 4.2.2 but the issues are not resolved..
Help?
http://forum.xda-developers.com/showthread.php?t=2432476
Sent from my LG-D802 using XDA Premium 4 mobile app
not working.. on 4.2.2 the problem is not resolved.
Help!!!
???
Return it for service.

G2 signs issue

I am facing signal issues on my Lg g2 d800. The phone suddenly loses all signals and i have to search manually for networks and then it get signals.
Any one else facing the same issue.
Is there any fix for it?
Sent from my LG-D800 using XDA Free mobile app
Are u on stock rom? If not, try reflashing your ROM. If problem persists u might have a hardware issue.
Stock 4.4 and I even tried flashing Grola ROM which 5.0.1 stock. Still the problem
Try another sim
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Thanks for the suggestion. I'll try and update this thread
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