1,Please clean the screen with fiber cloth that came with the screen surface. 2,Paste the face recognition.the end of film labeled "step1" label, layer from the film are "step2"tab. 3,Remove the protective layer of the label with the "step1" . gently pull the protector end of film, will be pasted face down, align the upper edge of snap to the screen, while the side will protect the base film paste slowly out, when the paste slowly as possible and confirm the attached as well to avoid bubbles. 4,Finally, remove the label with a protective layer "step2".the surface layer from the film torn off, if found accidentally left a small bubble, the available scratch card comes with a soft bubble attached flat push it away.