An operation method and a mobile terminal connected to an electronic device are provided. A user input is received for selecting a piece of content displayed on a display of the electronic device. The display displays a user interface including one or more items available at the mobile terminal based on the selected piece of content. A user selection of one of the one or more items included in the displayed user interface is received. The selected piece of content and a command for executing a function of the selected item at the mobile terminal are transmitted to the terminal. The display displays a sending user interface indicating that the mobile terminal executes the function of the selected item.