A control unit in an MFP determines whether a connection request from a communication device carried by a user has been received. If the control unit determines that the connection request has been received, then the control unit issues network identification information and transmits it to the communication device. When a connection is established, the control unit automatically alters the operation screen to an operation screen related to image processing based on the information transmitted/received to/from the communication device, and accepts an operation to execute image processing.