IMEI number unknown after flashing android 12 - Android Q&A, Help & Troubleshooting

Hi, I own a samsung galaxy A31F, I rooted it back in April of 2021 and decided to not update till android 12 comes out. I downloaded the firmware from samfrew and everything went perfectly until I opened the phone and found out that my IMEI is "unknown".
Both of them are, I have tried every method to restore them.
Including re flashing android again with root or without it. Nothing seems to work I tried apps.
I tried to use Xposed.
IMEI flashing software for PC.
Nothing seems to work and I would really appreciate it if someone decides to help.
Thanks.

Related

S3 "emergency calls only" network problem.

Hello.
I have a problem which annoys me a lot for a half a year now. Here's the story:
I bought my S3 from secondhand in 2012. It was Android 4.1.2. I was complete newbie that day. When update came off, I wanted to update it via my phone, bu then i threw errors. then i tried it via Kies but also did not managed to. I googled the problem and saw that I am rooted. I listened to people, who said that I should use Odin to upgrade my firmware, So did I. Downloaded latest firmware from sammobile.com. i did everything following the tutorial, but I got the network problem - no connection to the service - no sms, calls, 3g and so on. Only wifi. Then I spend three days trying to google out the problem. Tried almost everything, but as I didint had any backups made for my EFS, and my IMEI was "unknown" as phone said, I assumed that there is nothing i can do there. So I gave phone to the repair service. They fixed it in a day. I got it with the old 4.1.2 firmware version and enjoyed my phone like a year for now. And immediately backed up EFS.
So today I thought that im very bored with this old 4.1.2 and encouraged myself to try upgrade it again. So as I have efs backup, (I also did modem backup) I tried downloading latest 4.3 fimware from sammobile again. (as Im from Lithuania, there is no firmwared for LT, so I downloaded Croatian, because the carrier was the same (Tele2). And here I go again. No network, only wifi. I tried to restore efs, modem - no change with network (Did not managed to recover modem corectly, Odin fails when i want to recover it). then I tried several modems from Perkas file Stash, which i managed install via Odin, but still no change. I truly tried almost every app ant searched every thread in this forum for solution.
Now I tried to flash in to 4.1.2 I9300XXEMG4 firmware. And now im stuck with Samsung logo, mobile does not even turn on.
Any solutions? I will apprecaite any information. Thanks
There is no single solution, once the efs is damaged only a reputable repair centre can recode it properly. If it comes back with 4.1 then it isn't hasn't been fixed properly.
Sent from my GT-I9300 using Tapatalk

Kingzone

Hey people,
I have a big problem and I am a big noob what contains to software, hardware is my thing.
Lets get straight to the point......
I have rooted my device(Kingzone K2) with Kingroot on Android lolipop 5.1.
the first time i tried to root it would not work because my phone had a unknown version of android or something like that, so i reported that to kingroot and a month later they made it possible to root on my device.
now I have rooted my device but I started up my phone and all of a sudden my phone was reset to factory setting.
I thought it would have been a accident with android devicemanager.
And up following I wanted to download apps and stuff but it gave me the error that Android.procces.media was stopped.
And the apps wont download I tried everything to download them, also camera and gallery wont work for the same reason.
So can someone please help me with this problem.......
Thanks.

modem appears to not work

Hi everyone, i think during my attempts to upgrade my tablet from root marshmallow i messed or currupted the modem.
I had rooted marshmallow, then i installed twrp. I then tried to install lineage os, it went in a perpetual bootloop so i installed one of the modems for nouget. After that the bootloops stopped, but the tablet wont see the sim, and the baseband info is blank.
I also cant restore using a kdz as lgup wont recognize the device, i even tried uppercut and it sees it as unknown device, i have tried the different dll tricks without success.
does anyone have any advice?
after spending 2 days and finaly posting, was able to fix by doing a nandroid of marshmallow and flashing a marshmallow rom.

Help recovering from lost EFS partition

Hey everyone, I'm hoping someone is able to point me in the right direction.
I have an S9 Plus with TWRP installed and DevBase v5.9 as the ROM. I have made two backups using TWRP, one from when I first got the phone and a more recent one (within the last week).
When I first got the phone I removed a lot of the bloatware that came with it (Samsung stuff and other junk). After using the phone for a while I realized I needed to keep a couple of the Samsung apps, mostly Samsung Themes and Galaxy Apps (to keep other Samsung Apps up to date). This is where the problems first began.
I restored the backup I made when I first got the phone because I didn't remove any of the bloatware. The backup restored without any problems, I started updating apps, getting it back to the way I had it and noticed I didn't have any reception. I tried to make a phone call and it displayed an error "Not registered on network". I thought something went wrong during the restore, so I tried to restore the phone with the more recent backup I had. That, too, gave me the same message. I checked the IMEI number it was displaying 0000000000000/01. Definitely not my IMEI.
I tried my SIM card in another phone and it worked without any problem. I tried my partners SIM card in my phone and it displayed the same 0000000000000/01 IMEI. I downloaded the latest stock firmware for the phone in an attempt to try and get it back to normal, however, even on stock android it displays 0000000000000/01 IMEI.
So I'm in a sticky situation at the moment. Is there any way to recover from this problem?
cocachris89 said:
I tried my SIM card in another phone and it worked without any problem. I tried my partners SIM card in my phone and it displayed the same 0000000000000/01 IMEI. I downloaded the latest stock firmware for the phone in an attempt to try and get it back to normal, however, even on stock android it displays 0000000000000/01 IMEI.
So I'm in a sticky situation at the moment. Is there any way to recover from this problem?
Click to expand...
Click to collapse
Same here +1. Anyone has solution to this ? Please help ... I'm stuck in this since last month.

Samsung services not working

I tried a custom firmware but it didn't work and my phone kept restarting on boot. After 2 days I ended up installing an original firmware but my Samsung services more importantly "secure folder" is not working due to security reasons. I was wandering if you could help me fix that. My phone is A7 2018
I tried cash erasing and flashing my phone with an official rom. it has the latest update.
but still the problem is remained.

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