Abstract: A mobile device having two touch screen display panels includes a first body, a first touch screen disposed on an upper portion of the first body, a second body disposed under the first body, and a second touch screen disposed on an upper portion of the second body. The mobile device is configured to operate in a full-screen mode. In the full-screen mode, the first body is configured to slide in a first direction and a second direction, perpendicular to the first direction, such that the first and second touch screens are adjacent, form a substantially level surface, and function as a single display area.