I am on the current ios: 15.4.1. Is this some sort of hack/virus/spyware?
When did 15.4.1 release? Mine shows the current version as 15.4.
Can you clarify what you mean by “the phone rings”? Does your device ring or does the caller hear the half second ring on their end? Also can you think of the last change you made to your AT&T account and iPhone prior to this issue?
We don’t have enough to confirm but it sounds like some call-blocking/ screening feature though like the other user said so sinceI vent get immediate responses I guess I’ll start there. Can you have multiple other numbers try to reach you to see if it’s limited to certain ones? It’s possible that AT&T just called you from a number that isn’t blocked so it seemed to be fixed but wasn’t.
Open Phone, go to Contacts at the bottom, and find the last person that couldn’t get through. Look for Block this caller as an option. If it says Unblock this caller, tap it.
Plenty more to try but let us know if that helps!