Identification information for identifying each network out of a plurality of wireless networks is received. A wireless network identified by arbitrary identification information is wirelessly connected. Whether a printer in the wirelessly connected wireless network has a function of connecting a digital camera and performing output processing is inquired of the printer. Connection to the printer is controlled in accordance with a response to the inquiry. The digital camera performs output processing together with the connected printer. An information output apparatus having a function of connecting an information storage terminal apparatus by simple operation and performing output processing can be wirelessly connected.