SIM card Issue-No Sim Available-No Cell connection

IPhone 12 ProMax bugging out and getting intermittent No Sim Available message. Got it to come back after an hour with Verizon customer service but then it has reverted back to no cell signal. Cellular is “Off”.

Updated to IOS 16.12 and that is buggy per Verizon tech. Have tried all the recommended fixes but no solution. Any ideas? HAve a new SIM card being sent.