I'll start off with saying that I'm brand new to iphone and ios, I've had it now for a couple weeks. I've now encountered a couple of times an odd sound issue where I won't have any sound at all. I have a ProClip car mount with a built in charger, the cord is connected to my pioneer head unit so it sees the iphone 6+ as an ipod and can play music through my car speakers. I'm including this info just in case it's connected to or causing the sound issue. It will play through bluetooth but wont' display any song information and I can't control it through the steering wheel controls which is why I wanted it hard-connected. I've now seen the problem at least twice, once when I was first connecting the stereo and phone mount in the car and once today. The first time it was playing music through the stereo when I first hooked it up. I pulled the phone out and then went back and tested the connections again after installing the trim around the headunit. The 2nd time I plugged it in nothing would play and then when I tried to play music through the phone itself it wouldn't play. I rebooted and it fixed itself. Same basic thing today, I was listening to music on my way to work, got to work and took my phone in with me. Later I plugged headphones in to listen some more and all I got was a distorted whine and then silence. Unplugged headphones and tried the phone speaker and nothing but silence. Rebooted phone and works fine again. Could my stereo connection somehow being causing this? Am I doing permanent damage to the phone somehow? Any ideas or suggestions are welcome.