Chosen Solution
Hello…Here are the facts: Iphone 6s+ brought in because of no power I installed new battery. Phone powered on and showed positive charging state turned off phone next day, phone battery is dead. plugged in and let charge all day. no charge, no plugged in icon on the screen. removed new battery, charged with Kaisai external charger to 100% put battery back in phone. powers on, 100%, showed charging after i let it discharge a bit Turned off phone. No power today. What do you all think? (it also seems to be warmer to the touch than normal)
Probably you have a faulty Tristar IC, fact it doesn’t charge when battery is flat points to that. You also have a short somewhere or it may be the same Tristar draining your battery, hard to tell without starting fixing most obvious faults and reassessing behavior.
