[Completed] Signal Loss - XDA Assist

I've been searching high and low for a fix to my occasional data loss problem. When signal is lost (0 bars) sometimes it won't come back until I restart the phone or put it in and out of airplane mode.
My problem started when I upgraded to Virgin Rom GPE 4.4.4. While on 4.3 everything worked fine. But now when I revert back to 4.3 I'm faced with the same signal loss issue. I flashed the modem from http://forum.xda-developers.com/show....php?t=2544612 and still no luck.
I've also flashed Danvdh version of GPE 4.4.4 and I face the same issue.
Any help would be appreciated.

Please specify your Device as well as Carrier so we may be able to help you in the right direction. the Thread you have linked does not go anywhere.

Related

[Q] No Signal - Modem Broken?

Problem Solved - I restored the CM12 backup and now I have signal. Do you folks think I will continue to have problems if I attempt to go back to KK again?
After trying the CM12 Nightlies, I decided i wasn't a fan and decided to try some KitKat AOSP Roms before going back to CM11. My first mistake was installing the AOKP Rom which wasn't officially supported for the Sprint version. During set up I realized that there was no cell data and tried to unroot. My second mistake was when I got cell signal back; I decided to test if the initial loss of signal was just a fluke. Re rooted and reflased the same AOKP rom. Once again i lost cell signal. However, when I unrooted to stock this time there was no cell signal on the stock rom. I have no idea how to fix it. I've tried to flash the .pit i saw in another post and tried to use the "Phone EFS Clear" in Odin to no avail. At this point I'm rooted with a the Stock ROM and no cell signal. I realize I got myself into this mess by being dumb but I could really use the help in fixing the issue.
Info - Rooted with TWRP Recovery running Out of Box Stock Rom.
APN fix!
This will fix signal issues!
Thanks, if I go back to a KK ROM and have the same issue I'll have to try it out.

[Q] No Cellular Data after getting back to stock

Hello everyone,
I was on Lollipop 5.1.1 Stock and not rooted then i decided to give rooting a shot. I downloaded Cataclysm and flashed successfully. everything was fine then i discovered that there is no Cellular Data connection. Rebooted and tried all possible things but didn't work. Finally gave up and flash Cyanogenmod 12. worked perfectly, nothing was wrong and cellular data was fine. After a while i wanted to come back to the clean stock lollipop so i downloaded and flashed Factory Image of Lollipop 5.1.1. Weirdly the Cellular Data doesn't work, i have no idea why or what may cause the problem. Please note that my Nexus 5 is from Amazon Germany. I doubt that there might be something wrong with the radio image ( meant for US models ?!! ) but i don't know really or have no clue what might be causing this !!!!
Any help is appreciated. Thanks in advance
FIXED
After spending 7 hours moving between different ROMs, i found out what was causing the problem of cellular data. The problem also exists after flashing stock image and Cataclysm. I noticed that on CM12 there was one option in the APN settings that was different from stock and Cataclysm. The MVNO type was set to None however in stock and Cataclysm it was IMSI. I don't know how or why would android change or decide that on its own and i also have no idea what does this option do. I guess that this may help many people who are suffering from the same issue ( also people who updated stock ran into same problem )
Don't know where you are but, every time that has happened to me a hands free activation fixed it.
Sent from my Nexus 5 using Tapatalk

[P-3100]Signal issues after flashing CM 11 and then CM12.1

I basically have no signal ever since I flashed the roms. It says no service. The signal will go when I wake the device and sometimes it comes back when i connect to wifi. It is acting really weird. I dont remember exactly when this happened but I have been overlooking it for a month now since it wasn't as frequent, but now this is a permanent issue, I can't make any calls. I even just flashed CM12.1 in hopes of solving the issue with an update but it didn't work. Please help me out :crying::crying:
Can someone guide me on how to flash the modem, I read somewhere that it would fix the issue. The rom i am on right now is cm12.1 please help me out here

Please Help! My Phone Doesn't Get Any Signal

My brother bought a G3 d850 for me two days ago. The phone works very fine on 2g but when I switch to WCDMA only,the signal completely goes out.
I have tried factory reset many times and even flashed cloudy 2.5 rom but the problem still persists. Flashing stock modem didn't help either.
Please someone help me because the phone is currently useless to me without 3g.

Wi-FI bug won't find home network.

Hello all, it all started on 5.1.1. I flashed a new build of carbon and suddenly it was searching for WiFi constantly and not finding it at all. So I did a clean install of exodus and then cm 12.1. So I went back to stock locked my boot loader on 6.0.1. The WiFi issue still persist. Twrp 2.8.7
1 and radio/modem for mmb29k. So my question is what is going on. Any hope for me or is device done for.
It is possible that the wifi chip is defective. I would try flashing a stock LP build to rule out mm as being the cause.
I had two nexus 5 phones that also suddenly failed to connect to any networks the wifi was stuck at "turning on". I could only solve the problem by swapping in a new motherboard.
Oh that sucks. Thanks for the reply. Will try your suggestion and will look further into this issue.

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