Battery Changing Heating and Camera issues

From experience it’s very likely that when one of the cameras fail which it’s either the front or back camera as when you see a black screen of both. A lot of the time it is actually one of the cameras that have failed and is causing the other to not work. When one does fail they sometimes cause a short-circuit which causes the phone to heat up at that particular spot and cause rapid battery drain.

A way to get this tested out is to unplug one of the cameras first to rule it out. If still same problem, plug the one you just unplugged back in and unplug the other one. If either camera starts working then you know which camera to get replaced.

Here is a guide for them. My bet it’s the front camera as a lot of time sometimes this gets ripped by mistake because of how short the cable is.

iPhone 6s Plus iSight Camera Replacement

Substituição do conjunto da câmera FaceTime e sensores do iPhone 6s Plus

Edit: orgot to mention this but it can be just one of the cameras not being plugged in fully.