An electronic apparatus having a case including a first frame and a second frame configured to slide and extend with respect to the first frame; a flexible display wound over a first surface and a second surface of the case, wherein a first area of the flexible display on the first surface is increased or decreased in size based on a sliding movement of the second frame with respect to the first frame; and a controller configured to display content associated with an application in the first area, in response to an event, display notification information associated with the event in the first area, and in response to a first input to a second area of the flexible display on the second surface of the case, display at least a portion of content associated with the event in the first area.