A mobile device including a wireless communication processor configured to receive a call signal from an external device; a display; and a controller configured to display a first screen on the display including options for responding to the received call signal, in response to a touch and drag input in a specific direction, display a second screen on the first screen, respond to the received call signal in a hold mode when the second screen is touched and dragged in a first direction to a first distance, respond to the received call signal in a normal mode when the second screen is touched and dragged in the first direction to a second distance greater than the first distance, and respond to the received call signal in a speakerphone mode when the second screen is touched and dragged in the first direction to a maximum extension of the second screen.