Knocked over my X this week (in a case) and when I turned it on there was a thick, super bright, cyan bar running through it. I did some reading and some folks with a similar issue said it could be a poorly attached cable. I took the phone apart and undid and redid their cables. The problem remained. Now I don’t know what the fault is and what to replace. Is it the screen? Is the the logic/graphics board? Running screen mirroring on my Apple TV doesn’t show the error. But maybe the mirror output is a different chip than the screen output? I don’t want to spend too much on fixing this, but also don’t want to buy a new phone until September. I mean, we’re nearly there, right?