Which is of course not true. You can scratch an iPhone screen with any pair of keys, pocketknife, or any assortment of things that might be in a bag with a phone. A screen protector adds a layer of protection so that these things do not happen.To all the people saying the screen protector got scratched so it saved your phone screen, remember that glass is much, much tougher than a plastic screen protector. You need something at least as tough as the gorilla glass on your phone (diamond for example, or sand if you're not careful) to scratch your screen.