Samsung s21 no network emergency calls only

Hi,

Have you tried using another known working, network compatible, nano size SIM card in your phone?

Have you tried using your SIM card in a known working, network compatible nano size SIM card slot phone to see if it worked there?

Basically swap the nano size SIM cards between two same network phones i.e. your phone and another one and check what works where.

Has the phone been dropped at all?

What have you tried?

Did you put a SIM card into the phone? A pin must be pushed into the bottom left side hole to eject the SIM card holder. Place a SIM card into the holder, reassemble the holder into your phone and turn it on. No SIM card, no phone use possible except for emergency calls.