Abstract: This relates to a method of switching service profiles of a terminal apparatus from one to another and the terminal apparatus itself. The method easily switches service profiles of the terminal apparatus from one to another even from a remote place according to switching conditions such as a switching time. A terminal apparatus is connected to a network 8. The terminal apparatus has a service-state detector 1, a call controller 2, an initialization unit 3, a memory 4, a timer 5, a data registration unit 6, a card reader 7, and an I/O controller 9. The memory 4 stores service profile identifiers (SPIDs) and switching conditions such as a switching time. When the switching conditions are met, a present SPID is switched to a given one, the terminal apparatus is reset, and an end point initialization request is made to the network 8. An end point is initialized, and a service profile for the given SPID is allocated to the terminal apparatus.