ination in step S61 is NO is a case in which the cover unit 2 is merely opened and rotated 120?? or more with the first hinge 100 being as a shaft from the state of FIG. 2A (step S9; YES), and the portable telephone 1 is in the state of FIG. 1, and a movie is watched by holding the main body unit 3 so as to keep the display device 6 with the shorter side at the top.