hello, im a iphone 5s user, my phone back camera and flash stop working my phone didn't even fall, by look they look like new. flash light gives error of a triangle with exclamation mark in camera option and dont even work in any app even. when i use back camera phone stucks and when i tap to change to front then front works fine. also my touch id and home button also stopped working. many people said its software issue. i tried factory reset and every possible solution like doing software via itunes, updating, resetting etc.. please someone tell me what to do?