I recently purchased an LG-M327. In the past couple of days, it has stopped ringing for incoming calls: all other sounds work fine (media, app notifications etc). Volume is on, ringtone selected (but it will no longer play selected ringtones if I change the ringtone). Storage is not full, not in airplane mode. If I set the phone to vibrate I get vibration for incoming calls. My work around has been to select Message/call voice notifications on so it speaks caller ID info. Any ideas?