Oleophobic screen coating
Yet, the ability to remove smudges and fingerprints HAS been degrading over time for me. I used to be able to give one-swipe across a pant-leg or shirt-front and the screen would be crystal clear. The microfiber cloths that I purchased (JUST for cleaning my iPad) used to do a GREAT job with one or two passes... NOW, it just seems that all the cloth does is move the smudges around, but doesn't clean the screen any more. It takes a REAL EFFORT to get all the fingerprints and skin oils off. My assumption is that this condition is irreversible, correct?
iPad, iOS 4