A mobile terminal including a wireless communication processor configured to provide wireless communication; a display; and a controller configured to display a third task screen corresponding to an application on the display, wherein at least a second task screen and a first task screen are previously displayed on the display, in response to a touch input applied to a back key on the mobile terminal that is equal to or lower than a reference pressure while the third task screen is displayed, display the second task screen on the display, and in response to the touch input applied to the back key on the mobile terminal that exceeds the reference pressure while the third task screen is displayed, jump from the third task screen to the previously displayed first task screen such that the first task screen is displayed on the display.