A mobile phone (1) of the present invention includes a mobile phone storage section (8) configured to store both of (i) data including positional information and (ii) data including no positional information, a positional information extraction section (110) for identifying the data including the positional information from among the data stored in the mobile phone storage section (8) and extracting the positional information to be used as a standard for setting a predetermined area, a mobile phone determination section (111) for setting the predetermined area on a basis of the positional information extracted by the positional information extraction section (110), and a mobile phone notification section (112) notifying the user of the mobile phone when the current position of the mobile phone enters within the predetermined area set by the mobile phone determination section (111). Hence, the user can easily register the positional information.