Tempered glass is a hardened glass, specially designed to cover and protect your mobile phone screen from scratches and other damages. It does not affect the screen's functionality. In case the phone is dropped, it does not guarantee that the screen will not break as well, but it provides additional protection. It is 3D, which means it has undergone special processing to have curved edges that cover the entire surface of the mobile phone screen. This way, it is not noticeable that the screen has protection, and additionally, the curved edges are also protected. It is compatible with the Galaxy S10 Lite.