I have my iPhone5 set on "Vibrate on Ring" and the volume is not on mute, but when someone calls, it only vibrates. I've included it in Notifications Center, but that doesn't seem to do anything. Do Not Disturb has also been turned off. How do I fix this?
I fixed the won't ring problem by inserting & removing my headphones jack. This should work if your phone is stuck in headphones mode.