Hey guys my iPhone 8+ got randomly hot when I was on whatsapp last night then there was a black screen and it got super hot and won't turn on at all now. I tried charging it but nothing works. Thankfully my friend is going to America this week so I would ask her to check it out at an Apple Store. I was wondering what documentation would she need if she was to go there with MY phone requesting a replacement? The phone is still under warranty and I have the serial number
Please help
Please help