A user terminal device and a control method are provided. The user terminal device includes a display, a sensor configured to sense a user interaction on the display, and a controller configured to, in response to a user interaction being sensed by the sensor of a touch being made by an input device of a polyhedral shape that includes different touch patterns on each of a plurality of surfaces, control a function of the user terminal device according to a touch pattern on a touched surface among the plurality of surfaces.