I doubt there'd ever be such a thing. The phone's a slider, and the cover for the top just can't develop enough tension to grip the phone securely. The rubberized hard cases work great. The insides aren't rubberized of course, and there was a report a while ago that they scratched someone's phone. So I took mine off after 3+ months of use to check. Nothing, except for a little bit of lint. As long as you make sure that the top is on securely (I used 2 layer thick strips of insulation tape as shims), nothing is going to protect any better. The price you pay is 1 mm less at the top of the keyboard.