Chosen Solution
I tried to change my iPhone 7 battery. I open the phone and disconnects display from the motherboard. Changed the battery and when I put the screen back the screen came up with black and white stripes on it. But when I put new display it works fine. It happened with iPhone 6 also. Anybody know why it’s happening? I need your kind help.
so 1 screen has stripes and 1 doesnt, sounds like the 1 with stripes is faulty
The screen cables probably aren’t connected correctly. Disconnect the battery and display cables, then reconnect them, making sure they’re firmly clicked into place.
probably you damage the screen, replace new screen
