A user terminal apparatus is provided. The apparatus includes a first body, a second body mounted on one side of the first body to be slidably connected to the first body, a transparent display formed on the second body, and a controller configured to provide different user functions to a first area in the transparent display, which overlaps with the first body, and a second area which is a remaining part of the transparent display in response to the second body being slid from the first body to open the first body.