This device uses gorrila glass, I had to THROW it like ten time to even get a crack against a rugged concrete stair(I was throwing it at the edge of the stair so it would crack faster). And I can run a nail on this screen and not even get the slightest crack. The screen protector won't even protect the device's screen from cracking, screen protectors are meant for scratches on the screen which is very hard to get on this device's screen, a case is the one thar protects from crackage, dents, and body scratches. Screen protectors are just bringing down your responsiveness and resolution.