The screen guard arrived in the mail the day after my son dropped his iPhone and broke the screen. I applied the guard anyway. It has masked many of the cracks, kept the phone usable, and will keep the glass from chipping off or cutting anyone. I normally despise putting on clear guards since I never get them on right, but the instructions made this one downright easy to install. And, my son, who is incredibly picky and tactile, is fine with using the phone with the guard in place. That's the ultimate endorsement.