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 1 is provided with: a body that includes an operation unit side body 2, a display part side body 3, and a hinge mechanism 4A that connects the operation unit side body 2 and the display part side body 3 so as to be openable and closable around an opening and closing axis; a rotary dial portion 41, which is rotatable around a rotational axis Z, and which is attached to the body with a standard position; a mark 42, which is disposed at a position that can be visually confirmed externally both in the opened state and in the closed state, and which serves as an indicator for a rotation amount of the rotary dial portion 41; and a control part 74 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 41.