So couple of days ago I left my phone on my desk and was doing something else in a different room just to come back to 4 missed calls. Firs thing I thought my volume is too low but no it was 25. So I tried to call myself from home phone and no ring. My next step was to see if I can get any audio out of the phone at all. Tried to set ring tone, nothing. Played my music, same result. Restarted the phone everything is back to normal. Today I was in the car, spoke on my phone through car Bluetooth, got on the train, put my headphones in, no sound. Again? Yep, same exact result. Looked through every setting I could find. The only way to get it back is to turn the phone off and on again. Anyone else experienced a similar problem?