An information terminal transmits information relating to user authentication to an image processing apparatus via short-range wireless communication. The image processing apparatus performs processing for the user authentication using the received information, and transitions to a status where a function of the image processing apparatus is used via an operation unit upon condition that the user authentication has succeeded. The information terminal transmits data to be used in any one of individual functions included in the image processing apparatus to the image processing apparatus based on receipt of information indicating successful user authentication from the image processing apparatus. After receiving the data from the information terminal, the image processing apparatus uses the received data as a setting of the function of the image processing apparatus that corresponds to the data.