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 has adhesive on the entire surface, unlike edge glue protectors that have adhesive only around the edges. This helps with better fitting and seamless touchscreen functionality. It also prevents dust from getting underneath, which can happen with edge glue protectors when the adhesive around the edges wears off. Its special treatment makes the phone screen visible only from the front, blocking visibility from any angle. This protection is useful if you often use public transportation and do not want others around you to see your screen. On the other hand, it is not suitable for gaming or watching videos, as it darkens the screen.