Watch not receiving inbound calls

My Watch 3 with cellular service is suddenly not receiving inbound calls. One day it was, the next it isn’t. After a caller hangs up, the Watch tells me I had a “missed call” so it is aware of the call, just doesn’t ring or display the call on the face.

I’ve tried all the troubleshooting tips at Apple Support. Watch and phone configurations check out. I recently updated the iPhone X and the Watch to 11.4.1 and 4.3.2, respectively.

I think the next step is to unpair the Watch from the Phone and set it up again. Any other thoughts?