A mobile terminal includes a wireless communication unit establishing a first communication session with a first entity and a second communication session with a second entity, a display displaying a plurality of windows including a first window and a second window, a memory storing a merging menu, and a controller controlling the display to display the first window related to the first communication session and the second window related to the second communication session, the controller generating a third window including the first communication session and the second communication session in response to a an input and controlling the display to display the third window further including the first entity and the second entity.