mobile phone screen protector,mobile screen protector,clear screen protector &paypal &5ply carton,well package &EMS,DHL,UPS mobile phone screen protector,mobile screen protector,clear screen ... (fingerprint, facial oil, etc) left on the phone screen surface. Any of those will create air bobbles. ... 2: Clean the Screen with cloth.Step 3: Paste Screen Protector onto your phone screen, if not done ...