With the silicone rubber pad design, which is made to have a smooth and flat surface for adhering to the flat surface of the supporting object, H2 can hold the iPhone, iPod Touch, or even most of PDA or smart phones with flat back surfaces on the market.
Note: It is recommended to use H2 with devices which have a smooth and flat back surface, or to remove any case/cover from your device before placing on the silicone rubber pad in order to ensure the adhesive performance.