Just in case this is a specific A53 issue..

I had a update notification this morning, so as usual I updated

Update to UI8 and Android 16 seems to go ok but on restart no phone service. Investigation showed it not detecting sim.

I tested sim in old S6 phone and its fine. 

Desperate, I did a factory reset . After reloading everything , including UI 8 unfortunately, still a brick 

Lass than a year ago, I bought a phone Samsung not a small tablet .

Thoroughly upset with Samsung ATM.

Bill