Chosen Solution

This is a bizarre problem to have. Did a screen replacement, using an OEM screen. Didn’t have any problems with the repair and I checked all functionality before gluing it shut; there weren’t any issues. However, now - as I’m trying to use it - the top of the screen (an area about 1.5" by 4", top left corner) won’t let me push any buttons. I can move icons around in the affected area, but I can’t press anything (like the “back” button in the Facebook app, for example). Why would the digitizer do that?? And is there anyway to fix this??

If you check your work is the digitizer flex fully plugged in and the latch closed?

Sound to me like one of two things, #1 what ULOCK JOCKS said witch is the flex cable could be causing you some issues due to either minor damage from the closing up process or just came unseated. #2 in that corner of no response there could be a very minor hairline crack in one of the digitizer panels which could also be causing this issue for you either way screen has to come back off in-order for any further trouble shooting to happen on your part. Good luck let us know.