A mobile terminal, comprising: a wireless communication processor configured to provide wireless communication; a display including a main region and an extended region extended from the main region toward at least one side of the main region; and a controller configured to: deactivate the main region and the extended region of the display, activate the main region without activating the extended region in response to a knock code being input on the main region, and activate the extended region without activating the main region in response to the knock code being input on extended region, wherein the controller is further configured to activate both the main region and the extended region in response to the knock code being input on both the main region and the extended region, wherein, when the extended region is activated without activating the main region to enter a convenient mode, the controller is further configured to: display convenient mode information of a content on the extended region, in response to the convenient mode information being dragged to the main region, determine a type of the content, and automatically activate the main region, if the content is determined as text, display the convenient mode information on the extended region and display the detailed view on the main region, if the content is determined as an image, display the detailed view on the extended region and the main region; and in response to a user upward-dragging a bezel portion disposed at a lower end of the main region, the controller is configured to control the detailed view to disappear, and to control the mobile terminal to return to the previous state. a wireless communication processor configured to provide wireless communication; a display including a main region and an extended region extended from the main region toward at least one side of the main region; and a controller configured to: deactivate the main region and the extended region of the display, activate the main region without activating the extended region in response to a knock code being input on the main region, and activate the extended region without activating the main region in response to the knock code being input on extended region, wherein the controller is further configured to activate both the main region and the extended region in response to the knock code being input on both the main region and the extended region, wherein, when the extended region is activated without activating the main region to enter a convenient mode, the controller is further configured to: display convenient mode information of a content on the extended region, in response to the convenient mode information being dragged to the main region, determine a type of the content, and automatically activate the main region, if the content is determined as text, display the convenient mode information on the extended region and display the detailed view on the main region, if the content is determined as an image, display the detailed view on the extended region and the main region; and in response to a user upward-dragging a bezel portion disposed at a lower end of the main region, the controller is configured to control the detailed view to disappear, and to control the mobile terminal to return to the previous state. deactivate the main region and the extended region of the display, activate the main region without activating the extended region in response to a knock code being input on the main region, and activate the extended region without activating the main region in response to the knock code being input on extended region, wherein the controller is further configured to activate both the main region and the extended region in response to the knock code being input on both the main region and the extended region, wherein, when the extended region is activated without activating the main region to enter a convenient mode, the controller is further configured to: display convenient mode information of a content on the extended region, in response to the convenient mode information being dragged to the main region, determine a type of the content, and automatically activate the main region, if the content is determined as text, display the convenient mode information on the extended region and display the detailed view on the main region, if the content is determined as an image, display the detailed view on the extended region and the main region; and in response to a user upward-dragging a bezel portion disposed at a lower end of the main region, the controller is configured to control the detailed view to disappear, and to control the mobile terminal to return to the previous state. display convenient mode information of a content on the extended region, in response to the convenient mode information being dragged to the main region, determine a type of the content, and automatically activate the main region, if the content is determined as text, display the convenient mode information on the extended region and display the detailed view on the main region, if the content is determined as an image, display the detailed view on the extended region and the main region; and in response to a user upward-dragging a bezel portion disposed at a lower end of the main region, the controller is configured to control the detailed view to disappear, and to control the mobile terminal to return to the previous state.