9H tempered glass clear layer reserves high definition keeps your phone screen clean all day long. Please Note : Due to the curved design of Smart Phone, the screen protectors are slightly smaller than the actual screen size. We made it smaller to cover the flat portion of the screen and leave the curve edge. Please align well the screen protector to cover the flat portion of the screen Smartphone. Please check the model number of the Tab/Mobile for which you are ordering this product, if you purchase the wrong product, it may not fit or match your mobile/tab. YouTube Video for Installation : Customize screen protector installation video for customers to refer to. Customers could follow video instruction to install screen protector.