s4 mini handset sounds gone

A

AC Question

My Samsung galaxy s4 mini has lost all of its handset sounds. The speaker is fine and I hear a ringtone when I call someone, but there is no sound for incoming calls, and my alarms are not working (I was late for work today!) Also the annoying sounds like camera flash are gone, although I don't mind that. I have checked all the settings (I think) and the "turn off all sounds" is definitely unchecked. Any advice would be appreciated.
Thanks in advance:)