Tempered glass is a toughened glass specifically designed to cover and protect your mobile device's screen from scratches and other damages. It does not interfere with the screen's functionality. In case of dropping the phone, it provides additional protection, though it does not guarantee that the screen will not break. It features adhesive across its entire surface, unlike edge glue screens that have adhesive only around the perimeter, making it easier to install and ensuring trouble-free touchscreen operation. Additionally, it prevents dust from passing underneath, which can happen with edge glue when the perimeter adhesive wears out. Particularly useful for modern smartphones with curved screens.