Sim not connecting after latest android update installed today

The phone is showing my sim correctly in settings, and “use sim” is turned on but it is not connected. When I try to call it says sim off, to use the number first turn it on. Just did the android update today. This is obviously bad. I opened the back and made sure the sim was pushed in far enough in the top slot. And of course I rebooted which did nothing. Choose network, APN etc are all greyed out. Any suggestions?

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Problem solved. Murphy’s law. The sim card failed at exactly the time I updated Android. Carrier replaced at a store and all is working.