A foldable portable terminal unit containing a picture taking device capable of transmitting both image and voice. The unit enables users to see the display when taking pictures of themselves, as well as taking pictures of other objects. The lid portion (3) folds and rotates with respect to the case main body (2) of the portable terminal unit. The display (6) is provided in the lid portion (3) and rotates with respect to the picture taking device (11) fixed on the rear face or the side face of the case main body (2), corresponding to the state of taking a picture so as to enable monitoring.