Recurring "No Service" problem

jmcvieira

New member
Sep 17, 2017
2
0
0
Lisbon
Hello.

I have a Mi 5S Plus and started to have some problems with the network signal from a month ago. Very often (every 5/10 min), my phone seems to lose the network signal and goes to the "No Service" state, and is reconnected a few moments after this happens.

I have unlocked the bootloader via the official way and had Lineage OS 14.1 (Build from January) installed until I started experimenting stuff to try and solve this problem. Initially, I thought this was a software problem so I wiped everything and reinstalled the Rom, but it didn't help. I flashed Lineage 15.1, Resurrection Remix and MIUI but the issue was still there.

I flashed the latest stable and dev firmwares from here (https://forum.xda-developers.com/android/software-hacking/devices-xiaomi-firmware-updater-t3741446), tried reverting to previous versions and the issue still persists.

The problem is very annoying because not only makes my device unable to receive calls very often, the battery is draining at a crazy rate (with mobile network standby over 50%). I'm starting to think that the problem is hardware related and I hope that isn't the case.

I'm posting a logcat (https://paste.ee/p/lwWfD) of when the problem happened (20:58).

Do you have any idea of what could be causing this?

Thank you very much for your time and patience!
 
Last edited:

jmcvieira

New member
Sep 17, 2017
2
0
0
Lisbon
Hello.

Just for an update, I reverted the firmware to the oldest I could find (8.1.4 Global) and the issue seems to be better. It doesn't happen so often now, but it still happens sometimes. I have even replaced the antenna to see if it could be a hardware fault and it seems to have not fixed the issue.

Is there anyone that has had this kind of issue before?

If yes, I could really appreciate any insight about what could be the problem.

Thanks.