A settings changing system can power off only the mobile terminal apparatus of a user entering a specific institution without fail. The mobile terminal apparatus obtains ticket information from a ticket issue server through a base station and a network, and stores the information on a built-in contactless IC card. When the mobile terminal apparatus is put over a reader/writer mounted in the gate of a concert hall, theater, stadium, etc., the settings of the mobile terminal apparatus are automatically rewritten according to information from the reader/writer through the contactless IC card, and the set state (ON/OFF of the power and the manner mode) of the mobile terminal apparatus is changed.