Is it possible that a backlight may change after a few hundred hours and Its light becomes smoother and more uniform? When the iPad 3 was out I had yellow tint on one side of the screen, replaced several times, same with the iPad 4. When the Air came out I got one, it was a gift so I had to keep it. My iPad Air had a very annoying yellow tint on the right side of the acreen, really bad, I would get annoyed everytime. Oh well, it has been a year since and now my screen is pretty uniform, no more yellow tint on the right side. I don't know when it happened but I can't find it mo matter what. What could it be? Now I got an iPhone 6 Plus and it is perfect, but has a yellow tint on the bottom, and I dunno if eventually after hundred of hours of use it would get better, since it isn t so bad now. Did you ever buy an iPad or even iPhone and it had a yellow tint on an edge and after several months it was gone or not as bad? I heared that the glue thing is not true, so.. maybe backlight gets a little less harsh? What could it be? Maybe the reason why when you go to Apple Store their iPads are pretty good?