Abstract: A mobile phone includes a phone body (10), and a keyboard (20) slidably arranged on and electrically connecting with the phone body. The phone body has a top surface (11), two lateral surfaces (12), a display screen (13), and a keypad (14) disposed on the top surface. At least one lateral surface has an elongated guide groove (15) defined therein. The keyboard has a top plate (21), a pair of side plates (22), and a plurality of keys (23) disposed on the top plate. At least one side plate has a guide rail (25) protruding on an inner wall thereof. The guide rail corresponds to and slidably engages with the guide groove. The keyboard is slidable between a first position and a second position on two opposite side of the display screen.