Tempered glass is a hardened glass specifically designed to cover and protect the mobile phone's screen from scratches and other damages. It does not affect the functionality of the screen. In case of a fall, it does not guarantee that the screen will not break along with the glass, but it provides extra protection. It is 3D, meaning it has undergone special processing to create curved edges, covering the entire surface of the phone's screen. This way, it is not obvious that the screen has protection, and the curved edges are also protected. It is compatible with iPhone 15.