The present invention provides cellular phone in which a plurality of mounting parts for IC cards in which the country number of the contracting country and the own-station telephone number are stored are disposed, the cellular phone comprising position information storage means that store position of the cellular phone, selection means which make it possible to select the IC card in which the own-station telephone number that is used for calling is stored, first determination means which determine, on the basis of the country number stored in the selected IC card and the stored position information, whether or not calling is to be performed by adding header information for accessing the exchange of the contracting country of the IC card, and calling means which perform calling by adding the header information in cases where the first determination means determine that calling is to be performed by adding the header information.