Iphone 14 ProMax sporadic incoming call issues

Purchased 3 new Iphone Pro Max 14.  Ported numbers over from AT&T.  2 of my phone have no issues.  1 has issues with incoming calls and callers getting message Subscriber is not active.  Sometimes the call come through other time it does not.  No issues calling out, texting or internet.  Issue is only incoming calls.  Anyone else have this issue or any suggestions.