Abstract: Disclosed is a method of exchanging information with an external device. The method includes: receiving information about one or more applications installed in the external device from the connected external device, listing and displaying a GUI corresponding to the application on a screen according to the information about the application, transmitting a control request for the application corresponding to a user input for the GUI to the external device, and receiving control command information according to the control request from the external device and applying a control command.