About a week ago (this issue may or may not have been preceded by a “drop” of the phone - I can’t get clear details on the situation), my son’s phone stopped connecting to the mobile network. He can’t make/receive phone calls or texts unless in an area where he can connect to WiFi.
We rebooted numerous times. Switched from airplane mode to regular mode (with reboots in between). We even tried removing and reinserting the SIM card (as per some other suggestions found in the forum). The only other suggestion I found through a google search was a factory reboot - which I would obviously prefer to avoid.