Device:-S21 ultra(snapdragon)After i updated to android 12 oneui 4.1....i faced some battery problem in my phone...its draining alot...even if i left my phone unused it drains 1-3% in a hour...and also getting lower SOT...before 4.1 i got 7-8.5hour S...

Model:- S21 ultra (Snapdragon variant)SM-G9980(Chinese version ) ...County:-BangladeshI don't get my Android 12 update...but other users got their update in the exynos variant (i heard)...what should i do now...Can Anyone please help??

I face some issues with my s21 ultra..when power saving mode is enable sot counts properly but when power saving mode is disabled sot stop it's countingWhat should I do??Please help

Suddenly my screen on time stop it's counting. Please someone tell me how to fix thisDevice:-s21 ultra

Is the camera lens protector good for s21 ultra??Is the camera protector cause of bad image quality?Is the NILLKIN camera protector good for s21 ultra??If there is anyone from Bangladesh here please let me know which other camera protector will be be...