An electronic device comprising: a housing forming at least a rear side and a lateral side (611, 612, 613, 614) of the electronic device; and a display disposed to the housing to form at least a portion of a front side (617, 640) of the electronic device; wherein the lateral side (611, 612, 613, 614) includes at least two metal member portions (211, 212, 213, 214, 610) and at least two non-metal member portions (219, 620), which are smaller in an area than the metal member portions; wherein the lateral side (611, 612, 613, 614) includes a first side, a second side extending parallel to the first side, a third side extending from one end of the first side and one end of the second side, and a fourth side extending from the other end of the first side to the other end of the second side, wherein respective lengths of the first side and the second side are longer than those of the third side and the fourth side, characterized in that a non-transparent coating layer is formed on an outer surface of the rear side and at least a part of an outer surface of the lateral side (611, 612, 613, 614), wherein corner portions (215, 216, 217, 218) between the third side (213, 613) or the fourth side (214, 614) and the first side (211, 611) and the second side (212, 612) have a thickness thicker than that of metal member portions of the first side (211, 611) and the second side (212, 612) with which the corner portions are integrally formed and two non-metal member portions (219, 620) are only disposed to the third side (213, 613) or the fourth side (214, 614) of the lateral side and one metal member portion (213, 214) is disposed between the two non-metal member portions and is used as an antenna radiator, wherein at least a part of the non-metal member portions (219, 620) are visually exposed to the outside, without the non-transparent coating layer, in at least one of a first boundary area between the lateral side (611, 612, 613, 614) and the front side, and a second boundary area between the lateral side (611, 612, 613, 614) and the rear side, and wherein another part of the non-metal member portions (219, 620) is visually hidden by the non-transparent coating layer. a housing forming at least a rear side and a lateral side (611, 612, 613, 614) of the electronic device; and a display disposed to the housing to form at least a portion of a front side (617, 640) of the electronic device; wherein the lateral side (611, 612, 613, 614) includes at least two metal member portions (211, 212, 213, 214, 610) and at least two non-metal member portions (219, 620), which are smaller in an area than the metal member portions; wherein the lateral side (611, 612, 613, 614) includes a first side, a second side extending parallel to the first side, a third side extending from one end of the first side and one end of the second side, and a fourth side extending from the other end of the first side to the other end of the second side, wherein respective lengths of the first side and the second side are longer than those of the third side and the fourth side, characterized in that a non-transparent coating layer is formed on an outer surface of the rear side and at least a part of an outer surface of the lateral side (611, 612, 613, 614), wherein corner portions (215, 216, 217, 218) between the third side (213, 613) or the fourth side (214, 614) and the first side (211, 611) and the second side (212, 612) have a thickness thicker than that of metal member portions of the first side (211, 611) and the second side (212, 612) with which the corner portions are integrally formed and two non-metal member portions (219, 620) are only disposed to the third side (213, 613) or the fourth side (214, 614) of the lateral side and one metal member portion (213, 214) is disposed between the two non-metal member portions and is used as an antenna radiator, wherein at least a part of the non-metal member portions (219, 620) are visually exposed to the outside, without the non-transparent coating layer, in at least one of a first boundary area between the lateral side (611, 612, 613, 614) and the front side, and a second boundary area between the lateral side (611, 612, 613, 614) and the rear side, and wherein another part of the non-metal member portions (219, 620) is visually hidden by the non-transparent coating layer.