1. A method in a mobile terminal including a touch screen, the method comprising: detecting a connection of an external device; displaying, on the touch screen, a plug image corresponding to the external device in response to the detecting of the connection of the external device; displaying, on the touch screen, one or more icons, respectively corresponding to one or more application programs that are executable on the mobile terminal, in response to the detecting of the connection of the external device; receiving a selection of one icon of the displayed one or more icons respectively corresponding to the one or more application programs; and executing an application program corresponding to the selected one icon, wherein the plug image is initially displayed at a portion of the touch screen adjacent to a location at which the external device is connected in response to the detecting of the connection.