I can't see any spot on mine but there is a slight book spine effect at the top of the screen on my 6s+. It's most noticeable above the battery mark. BUT I'm keeping it because I went through three iPad airs for issues and finally ended up with a uniform screen with slight book spine effect. And what I found is that in the almost 2 years since I've had the book spine affected iPad I've barely noticed it. I basically forgot about it after the first couple of weeks. So for those with slight book spine effect only, I'd say don't be hasty to trade in, because it can get a lot, lot worse and worse is splotches and uneven colouring on your screen. That's the pits - splotches and uneven screen colouring.