A mobile communications equipment realizes data input with both hands, and an operation style of a small personal computer although it is a mobile phone in size. A first device unit includes a main unit loaded with a display unit for displaying various information. Each of a second device unit and a third device unit has input buttons for various operations. The first device unit has a connection unit for rotatably connecting the second device unit and the third device unit to the first device unit. The second device unit and the third device unit are connected to the first device unit at one point such that they can be expanded on both sides of the first device unit by depressing the button of an operation unit of the connection unit.