Many people complain about their iPhone 12/12 Mini/12 Pro Max not ringing after the iOS 15 Update? Check out the video for some easy and effective ways to fix iPhone (iOS 15) not ringing for incoming calls. 0:00 Opening 0:17 Things to make sure 1:07 Turn On Phone Notification 1:51 Make your Volume High 2:24 turn Off Bluetooth and remove Bluetooth devices 3:08 Eject and Reinsert Sim Card on iPhone 3:26 Reset All Settings