Mobile telephone

A mobile telephone comprising a body housing having a first casing and a second casing which are rotatably coupled with each other through the intermediary of a coupling portion, a camera portion mounted to the body housing, a mode change-over switch for changing over operation between a talk mode and an image pick-up mode, and a setting key, the first casing and the second casing of the body housing which are coupled to each other through the intermediary of the coupling portion being set in two conditions, that is, a first condition in which the first casing and the second casing are opened from each other and a second condition in which the first casing and the second casing are folded onto each other, the first casing incorporating a main display part in a surface which is exposed in the first condition but is hidden in the second condition, and a subdisplay part in a surface which is exposed in the second condition, said second casing incorporating a manipulating part in a surface which is exposed in the first condition but which is hidden in the second condition, in an image pick-up mode, an image picked up by the camera portion being displayed on the main display part in the first condition but on the subdisplay part in the second condition, the setting key being arranged in a surface which is exposed in the second condition, and being set as an image pick-up manipulation key in the image pick-up mode, but as a change-over manipulation key for changing over images on the subdisplay part in the talk mode.