Chosen Solution
I installed a new screen on my iPhone 7 and when I powered it on it turned on to the the white screen with apple logo and then froze. I tried putting it into recovery mode but it would always go to the same screen and then it stopped working completely. I tried another new screen and it isn’t responding at all now. Any ideas?
This is not good. You may have not installed it correctly and shorted something on the logic board. Did you disconnect the battery before replacing the screen?
Unplug the camera cable and the home button cable from the screen, then plug in the screen and the battery and try powering it on. If it boots fine then, unplug the battery again and try adding the home button, then repeat until you find out which component is causing the problem. If its not booting with just the screen plugged in you have most likely broken something on the logicboard.
Tried disconnecting the camera and home button and still nothing. If something was wrong with the battery would it still turn on if it was plugged in?
Your trying new screens was the original screen working??? If it wasn’t and u couldn’t see anything then it might have had something wrong with it already if it was working don’t try new screens from the same suppliers try the original screen plug it in without the battery connected then once it’s securely plugged in plug in the battery