1. Stick the sticker on the center of your cellphone，put the magnet round piece on the sticker;2. Find a place you want to put the holder in your car and clean that place， stick the bottom to that place and press to make it stable， put the cellphone(already with the magnet piece) on the holder， adjust it to an appropriate angle3. The bottom sticker is 3M foam stickers， when stick it on to your car， press it for about 1 minute. Then wait about 12-24 hours before using it