Package List: - Air vent phone holder × 1 - 3M metal plate × 1 - Square metal plate × 1 - Round protective film × 1 Installation: - Unscrew the nut; - Pass the nut through the ball head; - Tightly push the ball head into the joint; - Tighten the nut. Tips: - Without the phone case, please put the metal plate on the phone's back. - With the phone case, please put the metal plate on the phone's back or the phone case's back. - If the back of the phone/tablet or phone/tablet case is made of glass, after wiping it clean, first stick the PE film and then the iron sheet.