The Swarovski VPA Variable Phone Adapter is compatible with most current smart phones including most Samsung, Huawei, and iPhone models (not iPhone 4), HTC, LG, and Google phones. This is can be done with adjustable height, width, and camera recess positions. Three different adapter ring options are available to allow you to mount Swarovski binoculars and spotting scopes. Use this adtper in combination with an adapter ring to obtain the optimum image quality with you binocular or spotting scope. No need for a phone case when mounting your phone as the VPA is light yet rugged thanks to its fiberglass reinforced polymer.