I had the issue with the power button with my iphone 5 and was given a refurbisth iPhone. I had no isues with my previous iphone 5. Now, I have the same issue as everyone else has had and I know it is not the Hyundai since I took my iPad Air out to the car today and drove with the iPad playing and no cutouts.
It is the same version of thje IOS with no new s/w.
This is more than frustrating.