Notice: The privacy screen protector is made of ultra-fine shutter technology, which will affect the sensitivity of fingerprint recognition, escpecially for the cellphone with a design of front light sensor fingerprint unlock. We recommend to set the face recognition first, so as not to affect the normal use of the mobile phone. Installation Steps: 1> Use cloth to clean the phone screen. 2> Use #1 wet wipes to clean the screen. 3> Use #2 dry wipes to clean the screen again. 4> Use the dust-absorber to clean the dust on the screen. 5> Peel off the bottom protective layer (Back). 6> Match all the holes and edges of the protector to the phone. 7> Put down slowly, this kind of tempered glass film is with automatic adsorption function, can be attached with your screen well. 8> Scratch the screen to move the bubbles by a sc card or cloth if there are some bubbles left, work done. Notice: Adhere protector film is not a easy job, please be patient during the installation. Please make sure that the phone screen is completely clean and free of any dust before installation. Adjust the angle to assure there are no bubbles left. If there is any bubble left still, please don't be anxious, you can check if it will disappear after 24h. If it can't disappear in 24 hours later, please contact us via email, we will give you a satisfied solution. Your support will be highly appreciated, thank you for your cooperation.