Whole transparency: Realistic picture and more than 99 % transparency Much higher transmittance than PET screen protector Hardness:9H 3 times harder than PET screen protector. the screen will not get scratched even using hard object such as knives and keys Delicate touch: On back side of glass coated with a strong silicone layer to make installation easily and attached screen tightly so as to not affect sensitivity of touch screen Oleophobic coating: Nano technology processing for Oleophobic coating which prevent finger print leaves on surface of screen and dirt thing can be cleaned very easily Anti-shatter: The glass screen protector will not broken into small piece with sharp edge. It still keeps a whole piece of screen protector to protect your phone screen against scratches Installation Guide: Step 1 Please select a dust-free room to attached, it is best in bathroom. Step 2 Use wipes clean the screen s dust or foreign bodies. Step 3 Tear lower protective film, lightly attached alignment phone mirror, down, left, right border. Step 4 Removing the upper protective film. Step 5 aligned attached position again, then a little harder to four border. Please do not press the center part of the phone