Suitable for clean surface. First Dip the Suction cap in Soap water to remove any dust and without cleaning Put on the Dashboard. Strong sticky viscose gel suction easily adhere towindshield or most surfaces.Design with 5 small suction cups, which produce an intensive force of attraction. Keep your smartphone safe and sound. Alsoeasily removable. Metal hose connections,flexible and convenient. Perfect for all kinds of devices, like iPhone, Samsung, Android, iPad or other flat objects that need support. Tear off the bottom stickers,one press and it will stick tightly.