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.