An MFP specifies an MFP application to be started in a portable terminal and another application to be started after start of the MFP application. An NFC tag records information that allows the specified MFP application and the specified another application to be identified in the portable terminal. The portable terminal acquires the application information recorded in the NFC tag by the proximity wireless communication. The portable terminal controls a communication-connection changeover according to an application to be started based on the acquired information. At this moment, if a type of communication to be used by the MFP application and a type of communication to be used by the another application are different, the portable terminal starts the another application after making a changeover to communication connection corresponding to this another application.