Battery was perfect (at least apparently) until I installed iOS7. After that, at first when I connected the phone to either my mac pro or macbook, none seemed to acknowledge the phone was there, and the guy wouldn't charge. Then I connected it to a pc and the battery indicator on the screen appeared. Yay...no, because although the pc detected the phone, battery charge was going down, down... until it died. Today at the apple store they installed a new battery. It was half charged when I got home but again the same thing, not charging. So I downgraded the phone to iOS6 but still the same problem, not charging. So it's not the battery, it's not the iOS! Now what? Anyone encountered something like this?