The full face tempered glass is a full-coverage tempered glass, designed to protect the mobile screen from scratches and other damages. In case of dropping the phone, it does not guarantee that the screen will not break. However, it offers additional protection without affecting the screen's functionality.
The black border covers the entire surface of the screen, including the edges. It has adhesive all over its surface, ensuring better application and seamless touch screen functionality. It also prevents dust from entering underneath, which can happen with edge glue glass protectors.
It can be removed at any time without leaving marks or damaging the screen.