Hi, I replaced the battery and everything seems fine except the rear camera can't focus when taking pictures close up (for example, text in a book). I upgraded to IOS 8.4 recently and can't recall if I had this problem before so I am not sure if it is a function of me replacing the battery and something getting damaged or my recent IOS update. The battery works GREAT and I did not remove the screen and pop off the 3 connectors when replacing the battery so I don't know. Does anyone know if replacing a battery could cause a rear camera close-up focus problem? Thanks!