Оригинальный сообщение: Andrew Swift ,
For other people coming to this thread: I had a similar problem: 3rd party home button on iPhone 6s and battery emptying in 8hrs on standby. The person who replaced the home button took the screen off and the A9 (black square towards the top of the phone) was too hot to touch, even on standby. The fix was to get a new 3rd party home button from a "different factory". Right now the phone has been on standby for 16 hours and the battery is still at around 90%.