Unbelievable!!! Same thing happened to me when I upgraded to iOS7 so I brought it to Apple, they accused me of getting it wet and denying it (which never happenned), thankfully, I had Apple care, but it still cost me $50 and I bought a new case because I live in the pacific northwest and it rains once in a while so I thought perhaps it was ambient moisture getting into my charging prong. I went with the Mophie case, $80, and my new phone would only ring intermittently, which is a problem since I have responsibilities attending to emergency calls. Now with my new phone doing exactly what my old phone did, I can't help but be frustrated with the genius bar's assumption that I lied about the moisture and now I spent $130 plus tax that I never had to spend since it turns out that my do not disturb was enabled and that solved the problem, COMPLETELY!!!!! Thanks so very much SCroc. Wish I had my old phone so I could have tried that first. One would think the "GENIUS" at the apple store should have known this basic function and checked it first....Classic example of 5 star customer service