March update but not fix any bugs, bundle of bugs after Android 12 update but not fix .

I am using a52s few months but I am face an issue in the date of purchase . Network on 2g screen flickering on incoming calls . Not fix this issue on Android 12 update this is hardware issue not software.

Volte call enable but make a call from sim 1 zong,   network change 4g to H+ no make a hd calling . My frnd a21s using and make a volte calling on both sims. Any bro help us 

Samsung a52, what is the difference of battery life 90hz vs 60 hz