The full face tempered glass by 3MK is a full coverage hardened glass, specially designed to protect your phone's screen from scratches and other damage. In case of a phone drop, it does not guarantee that the screen will not break along with it, however, it is an additional protection. It does not affect the screen's functionality. The black frame covers the entire surface of the screen, even the edges. It is compatible with Galaxy A13 4G / Galaxy M23 5G.