The full face tempered glass by Blue Star is a full coverage tempered glass, specially designed to protect your mobile screen from scratches and other damages. In case of a drop, it does not guarantee that the screen won't break along with it, but it is an additional protection. It does not affect the screen's functionality. It has adhesive across its entire surface, unlike edge glue glasses that have adhesive only on their perimeter. This helps with better application and seamless touchscreen functionality. It also prevents dust from getting underneath, which can happen with edge glue when the perimeter adhesive wears out. It is compatible with the Galaxy S20 FE.