The tempered glass is a hardened glass specially designed to cover and protect your mobile screen from scratches and other damages. It does not affect the functionality of the screen. In case of a fall, it cannot guarantee that the screen will not break along with it, but it offers additional protection.
It has adhesive across the entire surface, unlike edge glue screens that only have glue around the perimeter. This helps ensure better application and smooth operation of the touch screen. Additionally, it prevents dust from getting underneath, which can happen with edge glue when the perimeter glue wears out.