The full face tempered glass is a full-coverage tempered glass designed specifically to protect your mobile screen from scratches and other damages. In case of a drop, it provides additional protection but does not guarantee that the screen will not break. It does not affect the screen's functionality. It features adhesive across the entire surface, unlike edge glue glass protectors which only have adhesive around the perimeter. This helps ensure better application and smooth touchscreen operation. Additionally, it prevents dust from getting underneath, which can happen with edge glue protectors when the perimeter adhesive wears out.