Ursprünglicher Beitrag von: Chris Pavlik ,
Replacing the flex cable will fix your issue with the camera not working. As far as the heating up goes, sounds like you need a new battery. I was also trained to work on iphones. Some guys I worked with never disconnected the battery during a repair, but I always do. Not sure if you do that as well. I hope replacing the flex cable and battery will solve your problems.