A data processing device includes a keypad including a number of keys and appropriate driver components to provide a capability to the data processing device to be used as a mobile phone, a computer and a television, a hinge, and a display unit physically coupled to the keypad through the hinge to enable movement thereof toward and away from the keypad such that the data processing device is in a closed state when a plane of a screen of the display unit faces and contacts a plane of the keypad and in an open state when the plane of the screen of the display unit is approximately perpendicular to the plane of the keypad. The hinge further enables movement of the display unit thereabout such that the plane of the screen of the display unit is away from the keypad in the open state when rotated 180° about the hinge.