MOBILE COMMUNICATION SERVICE PROCESSING METHOD, CELLULAR PHONE TERMINAL, AND MOBILE COMMUNICATION NETWORK SIDE DEVICE

PROBLEM TO BE SOLVED: To enable other user's cellular phone terminal or the like to be available like a user own cellular phone terminal when the user has no USIM (universal subscriber identity module) card at hand for a mobile communication service processing method, a cellular phone terminal, and a mobile communication network side device. SOLUTION: An acquisition request for subscriber personal information stored in a USIM card different from a USIM card installed in a cellular phone terminal 3 with the USIM card installed therein is transmitted to a server 1 through a base station 2. The server 1 provides the subscriber personal information to the cellular phone terminal 3 after conducting an authentication process to the acquisition request for the subscriber personal information. The cellular phone terminal 3 stores the subscriber personal information provided by the server 1 to switch an application mode so that the communication service is available on the basis of the stored subscriber personal information. COPYRIGHT: (C)2011,JPO&INPIT