The portable terminal, in starting the communication with a radio communication system having a different communication regulation in a different country or area, first recognizes the position thereof, acquires the radio communication regulation information varied from one country or area to another, and sets the corresponding regulation information for radio communication. The user can thus easily, unconsciously carry out the radio communication in keeping with the regulation of each country or area. Further, in the case where the regulation prohibits the use of the portable terminal, the fact can be displayed on the screen in an easy-to-understand way.