Chosen Solution
I replaced iPhone 6 screen a few days ago , as I have done it many times before , there was no problem until the battery had to be replaced today , as I put the screen back on I notice it has lines going up and down the phone and looks as though it had been dropped even though I didn’t drop it and I was very careful taking the screen off and putting it back on , any reasons why ? Is it the screen or the motorboard itself , thank you
Either it’s the flex cable on the screen gone bad or not connected properly to the logic board. If the screen connectors on the logic board seem fine and you already tried replugging the screen then the screen is faulty.
