Abstract: Provided are a method of inputting a user input by using a mobile device and a mobile device using the method. The method of performing operations of the mobile device according to a plurality of input modes, the method being performed by the mobile device, includes operations of, determining whether the mobile device is placed on a surface, if the determining of whether the mobile device is placed on the surface indicates that the mobile device is placed on the surface, changing an input mode of the mobile device, and performing a preset operation that corresponds to the changed input mode.

Abstract: Provided are a mobile terminal for providing a function performable by the mobile terminal to a user by using information input to the mobile terminal by the user, and a method of operating the mobile terminal. The method includes receiving a touch input while a touch sensor of the mobile terminal is activated and a display; determining an operation of the mobile terminal corresponding to the received touch input; and executing the determined operation when the display is activated.

Abstract: A display method of a user terminal device including a bended touch screen divided into a main area and a sub area, includes receiving a signal requesting displaying of an application installed in the user terminal device, and selectively displaying an application in one of a first layout and a second layout, in response to receiving the signal, in which the first layout corresponds to the sub area and the second layout corresponds to the main area.

Abstract: A content display method of a user terminal device including a bended touch screen divided into a main area and a sub area, includes displaying, on the main area, a first main content provided by a first application, and displaying, on the sub area, a first sub content associated with the first main content, receiving a user gesture input on the main area, and in response to receiving the user gesture, displaying, on the main area, a second main content provided by a second application, and displaying, on the sub area, a second sub content associated with the second main content.

Abstract: A method of controlling a user terminal device including a touch screen divided into a main area and at least one sub area. The touch screen includes a first surface including the main area, a second surface extending from the first surface and including the at least one sub area, and wherein the second surface is curved or bent with respect to a plane of the first surface is provided. The method includes performing an unlocking operation to activate the user terminal device, in response to a first pinch gesture being input on the at least one sub area while the user terminal device is locked; and performing a locking operation to inactivate the user terminal device, in response to a second pinch gesture being input on the at least one sub area, while the user terminal device is unlocked.

Abstract: Provided are a mobile terminal and a method operating the mobile terminal. The method includes: receiving a user input; performing a first operation corresponding to the user input; successively receiving the user input for a predetermined number of times or more within a predetermined time period; and performing a second operation based on a number of the successively received user input, wherein the second operation is set in advance in relation to the first operation.

Abstract: A method and an apparatus for performing gesture-based communication service are provided, in which a first device detects a first motion, and when the first motion corresponds to a first gesture that belongs to a gesture group, receives information about a second motion from a second device. The first device may perform an event that corresponds to a combination of the first and second gestures, when the received information corresponds to the second gesture that belongs to the gesture group.

Abstract: An electronic device is provided. The electronic device includes a touch screen configured to receive a touch input, and a controller configured to select a graphic image based on environmental information and provide the graphic image to a first layer, display the first layer on the touch screen, display a second layer that includes a user interface along with the first layer, display a third layer that includes a graphic object corresponding to the user interface along with the second layer, and change the graphic image of the first layer based on the touch input to the user interface of the second layer.

Abstract: A flexible display apparatus is provided. The flexible display apparatus includes a display configured to display a screen, a sensor configured to sense bending of the flexible display apparatus, and a controller configured to perform an operation corresponding to a twist bending when in response to the sensed bending being the is twist bending. The twist bending is a bending in which two bending lines are formed in opposing bending directions and meet at a certain side of the display, a controller configured to perform an operation corresponding to the sensed twist bending.

Abstract: A flexible display apparatus is provided. The flexible display apparatus includes: a display that is bendable, a sensor configured to sense deformation of the display, and a controller configured to perform an operation corresponding to the sensed shape deformation in response to the sensed deformation being shape deformation in which the display is alternately bent in opposing directions within a predetermined time.