A mobile phone (1) includes a main body (3), a keypad (5), and a pair of fasteners (7, 9) slidably and pivotally attaching the keypad to the main body. The main body has a housing (2) with a recess (31) defined in a lower portion thereof. The keypad is received in said recess and comprises a front panel (51) for a keypad input mode and a back panel (53) for a touch screen input mode. A switch between two input modes is achieved by sliding and rotating the keypad around the pair of fasteners to display one side or another side.