I have the same problem with the top half of my screen, it doesn't respond , so any apps that are in the top half, I can't open
Have tried restarting it several times, leave the phone off for a day, but nothing works.
Searched the forums to see if there is a way yo calibrate the screen, but nothing...
Also on the top left corner if the screen, it looks like the LCD is pulling away from the glass (seen several other posts regarding this, but NO clear answers from Black view)
The phone is new from Jan 2017 (6 months old only!!!)
Had anyone found any solutions to these problems.???