A mobile terminal comprising: a body comprising a first frame and a second frame configured to slidingly move relative to the first frame in the horizontal direction, causing a change from a first state to a second state in which the body is expanded, and a flexible display comprising a first area provided on a front surface of the body, a second area provided on a rear surface of the body and a third area between the first area and the second area and surrounding a curved side portion of the second frame, wherein the first frame comprises a plurality of first support portions , each of the plurality of first support portions extended in a horizontal direction and vertically spaced a preset distance apart from another one of the plurality of first support portions , and wherein the second frame comprises: a plurality of second support portions , each of the plurality of second support portions provided between respectively corresponding first support portions , a third support portion provided in a front side of the second area of the flexible display , and extended in parallel with the plurality of second support portions , and the curved side portion provided between a first end of the plurality of second support portions and a first end of the third support portion , wherein the second area of the flexible display is configured to slidingly move on the third support portion when the second frame slidingly moves a body comprising a first frame and a second frame configured to slidingly move relative to the first frame in the horizontal direction, causing a change from a first state to a second state in which the body is expanded, and a flexible display comprising a first area provided on a front surface of the body, a second area provided on a rear surface of the body and a third area between the first area and the second area and surrounding a curved side portion of the second frame, wherein the first frame comprises a plurality of first support portions , each of the plurality of first support portions extended in a horizontal direction and vertically spaced a preset distance apart from another one of the plurality of first support portions , and wherein the second frame comprises: a plurality of second support portions , each of the plurality of second support portions provided between respectively corresponding first support portions , a third support portion provided in a front side of the second area of the flexible display , and extended in parallel with the plurality of second support portions , and the curved side portion provided between a first end of the plurality of second support portions and a first end of the third support portion , wherein the second area of the flexible display is configured to slidingly move on the third support portion when the second frame slidingly moves a plurality of second support portions , each of the plurality of second support portions provided between respectively corresponding first support portions , a third support portion provided in a front side of the second area of the flexible display , and extended in parallel with the plurality of second support portions , and the curved side portion provided between a first end of the plurality of second support portions and a first end of the third support portion , wherein the second area of the flexible display is configured to slidingly move on the third support portion when the second frame slidingly moves <EOS>