Couple very odd issues.
1. A few people in my contacts list when I call them I not hear the ringing tone, on their side it rings once as a missed call, all the meanwhile it finally starts ringing on my side and then rings on their side again.
2. Again no ringing sound and people just pickup the phone.
3. In call logs when you dial a call from the list it dials the wrong one unless you go out of there and back in.
4. Deleting calls from call log crashes to home screen. This has been an issue on all iOS 11 versions beta or not.