Means for supporting wireless fresnel lens over a mobile device to enhance antennae reception of rf signals

Abstract

A Fresnel lens is adapted to be attached to a button associated with an expandable grip structure for a mobile device. The expandable grip structure can include a collapsible membrane formable into a conical shaped when expanded from a flat position to an expanded position, the button formed at one end of the collapsible membrane and having an outer perimeter and a surface, and a base formed at a second end of the collapsible membrane. The collapsible membrane can be expanded and moved by the base along a back surface of a mobile device to a location on the back surface that enables the Fresnel lens to enhance radio frequency reception by the mobile device.