The full face tempered glass of 3MK is a hardened glass that covers the entire screen, specially made to protect the screen of your mobile phone from scratches and other damages. In case of a drop, it does not guarantee that the screen will not break along with it, however, it provides an additional protection. It does not affect the functionality of the screen. It is a combination of tempered glass and protective membrane, as it has a ceramic coating for hardness like glass but also light elasticity like a membrane. It is scratch-resistant, repels fingerprints but reflects light. More durable than tempered glass. It is compatible with Galaxy S8.