Even after being in a 5g covered area, my samsung phone uses 4g data. The other person with me with other phones avails Airtel 5g easilyHow to rectify this issue?

For past 1 week my phone has started to heat up mainly in the upper half of the screen and fingerprint area . My phone is samsung f41Kindly help

The adaptive brightness is toggled on ..But it increase brightness when in bright lightBut doesn't decrease it at all when in dark...Sometimes on locking and unlocking it works..Very problematic

The phone restarts once or twice a day.It's samsung f41.The problem is since 2 3 days ..I had neglected thinking it's a problem with my mobile case.But it persists even after changing it...What to be done ?

Once the phone goes into sleep or locked or closed from background apps don't receive data....Tried with switching the data saver off and even battery saver is off...Rebooted the devicebut problem persistsAny solution