I finally received my Otterbox case for my Tab Pro last night but after I installed the device in the case, I almost immediately started having the same issue with the screen as I did with my S4 and an Otterbox case; the screen appears to develop/aquire/absorb some sort of oily substance between the inside of the plastic screen and the touchscreen of the device. It's enough to distort the picture and the only way to get rid of it is to completely disassemble the case and clean the inside of the plastic screen and the device touchscreen. But almost immediately when I get it reassembled, it starts to develop again. This isn't skin oil or anything like that; I never use my fingers on the touchscreen, only a stylus. Even with that it happens. And like I said, my S4 in an Otterbox case does the same thing. My LG G2 on the other hand, never has this problem. I use the same stylus and cleaning cloth on the G2 as I use on the Samsung devices. The Tab Pro and S4 have this problem, the G2 does not. So anyone else have this issue and know what to do about it? Only the Samsung items have this issue and I find it extremely annoying as I am very anal about the appearance of the screens on all my devices and I am constantly cleaning and polishing.