Chosen Solution
I recently did a glass only repair on an iPhone 6 plus. After replacing the glass I tested the screen and it was in perfect working order except some LOCA glue had gotten in the back light. So I took a backlight from a screen I had and put it on. When I was removing the back light from the other screen I messed it up a little but I needed to use the phone so I just put in on the screen until I could get another back light. After putting the back light on, I got vertical lines in the screen. When I first turn it on you cannot see them but in about one second you can see them and they get worse and worse and in about 10 seconds the screen is completely covered with lines and sometimes the digitizer doesn’t work after a little while. It always works right away. What caused these lines?
Normaly Vertical Lines can be caused by a Display Connector that is not plugged in right or gut some dust in it.
