The Volte-Tel 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 functionality of the screen. In case of a mobile phone drop, it does not guarantee that the screen will not break along with it, however, it provides an additional protection. It has adhesive on its entire surface, unlike edge glue screen protectors that only have adhesive on their perimeter. This helps for better application and seamless touch screen functionality. It also prevents dust from passing underneath, which can happen with edge glue protectors when the adhesive on the perimeter wears off. It is 2.5D, which means its perimeter has rounded edges for a smoother touch experience during usage. Useful for modern smartphones with curved screens. It is compatible with TCL 305 / TCL 306 / TCL 30E/ TCL 30SE.