No carrier information available

I have tried multiple things to get my cellular network to connect again after updating to IOS 12. Nothing has been successful so far. I have no carrier information available in my phone, and I am told there is an update needed to use my cellular data. Is the SIM card shot? Are there any suggestions? I have tried resetting my Network settings, removed the SIM card, rebooted, tried resetting all settings, and all the above again, and still nothing.