I have Samsung A21. USB C port didn't want to charge most of the time. I replaced this port and it looks it is working but I got different problems instead.
# When I'm in the basement I can't call at all. I get error" You are not registered to network".
# When I'm upstairs I can call after doing restart but most people don't hear or hear me bad.
I reinstalled sim card. There are no updates needed.
Any ideas?