At the AT&T store I purchased a 3-pack of Case-Mate screen protectors. I attempted to install one, and there was dust or something underneath it (despite the wiping/hand washing, etc. I did) so I tried to remove it immediately after installation. It was so stuck on there that I had to pull really hard to get it off. Now my screen does not have the smooth, "slidey" feeling it should have. It's kind of like your finger gets stuck, more like a squeaky clean window instead of a waxed car feeling. I can't find any evidence of residue, it's more like it took off something that was on top of the original glass, if that makes any sense. Even my kids noticed it. Any suggestions on how I can get that smoothness back again? It's brand new and I'm pretty bummed about it.