The full face tempered glass is a full-coverage tempered glass, specially designed to protect your mobile phone screen from scratches and other damages. In case of a drop, it does not guarantee that the screen will not break along with it, but it provides additional protection. It does not affect the screen's functionality. The black border covers the entire surface of the screen, including the edges. Its special treatment makes the mobile phone screen visible only from the front, preventing visibility from any angle.