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My LG G4 screen got cracked so i wanted to replace its digitizer, i took out all the components and swapped them over to the new digitizer and the left half of my screen is displaying a black screen. I then swaped it over back to the old digitizer and the screen works fine it was just cracked, is the digitizer i bought faulty, touch sensitivity works fine on the black display
Sounds like you have a faulty digitizer that is causing the screen to be wonky. I would at least try a new screen and digitizer assembly to see if this behavior continues. LG G4 Screen LG G4 LCD and Digitizer Replacement
