Only alert I get when I get a call or text message is vibration. Airplane and Do not Disturb are both off. Correct sounds work when checked on Settings. iOS was 9.3.3. Updating to 9.3.4 last night did not solve problem. In upper right of screen is %battery, Bluetooth icon and a tiny arrow pointing to northeast. I don't recall the arrow being there before, but not certain about that. Under Settings my first choice is Vibrate and both are On. Next is Ringer and Alerts and sound slider is up over half. Next are the Patterns and testing there produces my selected sounds. Lock Sounds and Keyboard Clicks are both ON. I see no place where I can turn Sound On or Off. Any suggestions?? Is there a place where I can change Settings back to factory default?