A mobile phone (10) includes a display (14), an acceleration sensor (54), etc., and a displaying direction of the display (14) is set based on an inclination detected by the acceleration sensor. If the mobile phone (10) is rendered in a horizontal posture or approximately horizontal posture, an image imaged by a first camera module (50) is output so as to be subjected to face detection processing. If a face of a user is detected from the imaged image, a direction of the face is detected. When the face direction is detected, the displaying direction of the display (14) is set based on the face direction. An image is displayed on the display (14) in a displaying direction being set based on the direction of the face of the user.