A mobile terminal, comprising: a display unit ; a metallic frame comprising a base portion having a front surface and a rear surface, and an edge portion continuous with and adjacent to the outer periphery of the base portion , wherein the display unit is thermally coupled to the base portion ; a housing including a first cover and a second cover coupled to the front and rear surfaces of the metallic frame , respectively, wherein the edge portion is exposed outside the mobile terminal between the first cover and the second cover and is configured to radiate heat generated by the display unit from a space inside the mobile terminal to a space outside of the mobile terminal; a first waterproof layer and a second waterproof layer arranged between the first cover and the metallic frame , and between the second cover and the metallic frame , respectively, characterized in that the mobile terminal further includes a non-metallic portion formed as a single structure at the front and rear surface of the metallic frame , wherein the base portion and the edge portion are partitioned from each other on the front surface and the rear surface of the metallic frame by the non-metallic portion ; the display unit is supported by the base portion as one surface thereof comes in contact with the base portion , the first waterproof layer is disposed to fill a gap between the first cover and the non-metallic portion , wherein the first waterproof layer is implemented as a waterproof member having opposing surfaces that are attached to the first cover and the non-metallic portion , respectively, the second waterproof layer includes a first member coupled to a groove portion formed along the edge of the second cover and a second member protruding from the first member and attached to the non-metallic portion , the second member being configured to be bent toward the interior of the mobile terminal when the second cover is coupled to the metallic frame . a display unit ; a metallic frame comprising a base portion having a front surface and a rear surface, and an edge portion continuous with and adjacent to the outer periphery of the base portion , wherein the display unit is thermally coupled to the base portion ; a housing including a first cover and a second cover coupled to the front and rear surfaces of the metallic frame , respectively, wherein the edge portion is exposed outside the mobile terminal between the first cover and the second cover and is configured to radiate heat generated by the display unit from a space inside the mobile terminal to a space outside of the mobile terminal; a first waterproof layer and a second waterproof layer arranged between the first cover and the metallic frame , and between the second cover and the metallic frame , respectively, characterized in that the mobile terminal further includes a non-metallic portion formed as a single structure at the front and rear surface of the metallic frame , wherein the base portion and the edge portion are partitioned from each other on the front surface and the rear surface of the metallic frame by the non-metallic portion ; the display unit is supported by the base portion as one surface thereof comes in contact with the base portion , the first waterproof layer is disposed to fill a gap between the first cover and the non-metallic portion , wherein the first waterproof layer is implemented as a waterproof member having opposing surfaces that are attached to the first cover and the non-metallic portion , respectively, the second waterproof layer includes a first member coupled to a groove portion formed along the edge of the second cover and a second member protruding from the first member and attached to the non-metallic portion , the second member being configured to be bent toward the interior of the mobile terminal when the second cover is coupled to the metallic frame . <EOS>