A portable communication device is disclosed. The portable communication device includes a body housing; a rotatable auxiliary housing which continuously maintains a state in which the auxiliary housing is received so as to be parallel to a bottom surface of the body housing, the auxiliary housing being opposite to the bottom surface of the body housing; and a rotation/swing housing engaged with the body housing and rotated about a first hinge axis so as to rotate away from the body housing and to be swung about a second hinge axis perpendicular to the first hinge axis.