The full face tempered glass is a full coverage tempered glass, specially designed to protect your mobile screen from scratches and other damages. In case of a fall, it does not guarantee that the screen will not break along with it, but it is an additional protection. It does not affect the screen's functionality. It has adhesive on its entire surface, unlike edge glue glasses that have adhesive only on their perimeter. This helps in better application and trouble-free operation of the touch screen. It also prevents dust from getting underneath, something that can happen with edge glue when the perimeter adhesive wears out. It is 9D, which means it has undergone special processing to acquire curved edges that will cover the entire surface of the mobile phone screen. This way, it is not noticeable that the screen has protection, but it also protects the curved edges. It is compatible with the Huawei P40 Lite E.