iPhone 7 plus is randomly shutting down after charging replacement
my iphone 7 plus is randomly shutting down after charging flex replacament. Besides that everything works fine (taptic engine works, phone is charging when plugged in etc.) but after a while it shuts down and Apple logo appears on the screen and the phone starts again.
I also replaced broken glass but kept the original LCD, so this shouldn’t be causing the issue.
I have already tried to replace the battery for a new one but the issue remained.
Does anyone know what could cause the problem and how to fix it?
I am little bit afraid that the problem could be on the motherboard since it is possible that I damaged some microparts during the replacement.
If the cause of this issue really is the motherboard damage could anyone please give me an advice which part of the motherboard I should check whether is really some part missing there?