When you switch to front camera , there comes a light around camera for short time. I am seeing this after April update in a52s

For a heavy user , is it worth to upgrading to S22 , primary focus is performance 

With every update , I see more issues than earlier.I am thinking to flash to the best update we had for this device.

Everytime I open lockscreen I saw there is something that is accessing the location in background and after few seconds on opening lock the location access used to stop. I suspected it could be Google's app (IFYKYK) as I have enabled location history...