An object of the present invention is to provide a cellular telephone terminal in which intuitive operation is possible, by providing a rotary dial portion. A cellular telephone terminal is provided with: a body that includes an operation unit side body, a display part side body, and a hinge mechanism that connects the operation unit side body and the display part side body; a rotary dial portion, which is rotatable around a rotational axis, and which is attached to the body with a standard position; a mark which serves as an indicator for a rotation amount of the rotary dial portion; and a control part that causes one application among a plurality of applications to enter a state in which activation thereof is possible, based on the rotation amount of the rotary dial portion.