The full face tempered glass is a full-coverage hardened glass, specially designed to protect your mobile screen from scratches and other damages. In case of a mobile 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 screen surface, including the edges. It has adhesive on the entire surface, unlike edge glue glasses that have adhesive only on their perimeter. This helps in better application and seamless touch screen functionality. It also prevents dust from getting underneath, which can happen with edge glue when the perimeter adhesive wears out. It is 5D, meaning it has undergone special processing to acquire curved edges that cover the entire surface of the mobile phone screen. This way, it is not noticeable that the screen has protection, but the curved edges are also protected. It is compatible with the Galaxy S20 FE.