A folding portable communication unit is composed an upper cabinet, a lower cabinet, and a hinge for so supporting the upper and lower cabinets that they are rotational around the hinge. A simplified LCD and a simplified key unit are provided for a rear cover of the upper cabinet or the lower cabinet, and thereby a user can watch the simplified LCD or operate the simplified key unit, even when the upper and lower cabinets are folded. Information is displayed on either of a LCD or the simplified LCD depending on whether the upper and lower cabinets are folded or not and on the kind of information to be displayed.