The full face tempered glass is a full-coverage tempered glass designed specifically to protect your mobile screen from scratches and other damages. In case of a drop, it provides additional protection, but it does not guarantee that the screen will not crack. It does not affect the screen's functionality. It features 9D characteristics, meaning it has undergone special processing to have curved edges that cover the entire surface of the mobile screen. This makes the protection almost invisible, while also protecting the curved edges of the screen.