XS Max screen issues
tldr: Bootloops with original screen and when using a replacement screen I have no touch except for tap to wake.
I recently got myself a very destroyed XS Max that I wanted to fix (back + front destroyed, wireless charging pad gone and volume flex also destroyed).
When I got it with its original screen it kept bootlooping (Apple logo and after 2-3 seconds blackscreen into Apple logo sometimes with the screen flashin green).
Read something about dock connector temperature sensor stuff and ordered a new dock connector flex.
But since the new housing + screen (cheap aliexpress incell LCD one) already arrived I decided to already transfer it and just for fun try booting it up again and it somehow booted.
Touch wasnt working so I turned it of again and reconnected both screen cables and touch was alive.
But everytime I disconnected both screen cables it was 50/50 if touch is working or not until now.
Now only tap to wake works but no touch.
Tried the original screen again and it still bootloops.
Phone also got very hot during all this but this may just be due to resetting and reflashing iOS while charging an almost dead battery.
edit: definitely was the reason for it getting hot.
Now its comfortable again but seems to lag sometimes (pressing power button or tapping it takes 4 - 5 seconds to recognize)
Now I am close to ordering a new replacement screen to see if my screen somehow is just bad or my phone.
Any other Ideas ?
edit2: managed to further diagnose it.
When I plug the original screen in without the touch flex cable the phone boots but obviously has no touch.
On the new screen tap to wake doesnt seem to work on the bootom 1/8 (literally the part where you have to swipe to unlock) So maybe just a bad screen and some weird touch damage on the old screen ?