Nokia 5 TA 1053 DS India
I gave my phone for repair in service centre. after repair they downgrade phone software android 8.0.0 from 8.1. After that my phone has week signal. I checked both sim in other phone but the both sim has his network . I update my phone to android 8.1.0 with SEP 2018 security update.but problem still alive.
I tried soft reset as well as hard reset but problem still occur. Help me.