I hate to be lazy but I'm just going to copy the thread I started on the apple forum word for word... I have an iPhone 6 that is in great shape. No cracks, no dents, no scrapes. All the buttons work. The TouchID works great, the camera takes great photos. Etc etc. There's just one issue. The screen is FILLED with crazy changing artifacts. What I'm trying to determine is, does this phone simply need a new screen, or could there be more wrong with it? Now considering everything I said so far, it also never crashes. It runs totally normally, even when running CPU/GPU intensive games for hours. It tracks your finger across the screen perfectly, no issues there. This phone has been this way for about a year. The way it go this way is kind of funny. Apparently my gf put it in her bra while she went out for a run. She sweat a lot, and when she got home, it was like this. Yeah, I don't know 'how much can one person sweat' so don't ask. But given that it's condition hasn't gotten better or worst in a year, and given how literally nothing else has even the slightest hint of problem, that leads me to believe it is SOLELY a screen issue. If this were a Mac, I'd say it could also potentially be a GPU issue. But here, given that the CPU and GPU are the same chip, and given that I can run it with really taxing apps (MMX Racing for example) and it doesn't have the slightest glitch, I'm thinking screen. Any thoughts? I don't want to pay for a new screen, only to find out it needs something other than a screen, and now i'm S.O.L. I made a youtube video of me using the phone, so you could get an idea of how it behaves. So let me know what you think.