An electronic device comprising: a cover glass; a display (120, 720) exposed through the cover glass; a housing (114, 710) for mounting the display, the housing (114, 710) including a side surface member (114b, 714), at least part of the side surface member (114b, 714) configured to operate as a first antenna element; a first printed circuit board, PCB (142, 820), and a second PCB (144, 830) that are disposed inside the housing (114, 710); a back cover (116, 716) coupled to the housing (114, 710); and a communication circuit (160, 760) configured to feed the first antenna element, wherein the housing (114, 710) includes a support member for supporting the first PCB (142, 820) and the second PCB (144, 830), and the support member is disposed between the display (120, 720) and the first PCB and the second PCB; wherein a shield layer (130, 730) is interposed between the display (120, 720) and the support member, at least one of the shield layer (130, 730) and the support member being configured to operate as a ground area, wherein the support member includes a first area for supporting the first PCB and a second area for supporting the second PCB, wherein the first antenna element is connected to the first PCB (142, 820); wherein the first antenna element is electrically connected to the ground area by way of the first PCB (142, 820); wherein the first PCB (142, 820) comprises a ground layer, the ground layer electrically connected to the ground area via at least one ground point of the ground layer of the first PCB (142, 820), wherein the first antenna element is connected to at least one of the at least one ground point of the ground layer in the first PCB (142, 820), and wherein the communication circuit (160, 760) is configured to feed the first antenna element via a feeding point of the first PCB (142, 820); the electronic device further comprising: a nonconductive material interposed between the support member and the first PCB (142, 820); wherein a spaced distance between the first PCB (142, 820) and the support member is longer than a spaced distance between the second PCB (133, 830) and the support member by the nonconductive material; and wherein the distance between an upper surface of the support member and an upper surface of the nonconductive material is larger than the distance between the upper surface of the support member and an upper surface of the second PCB (133, 830). a cover glass; a display (120, 720) exposed through the cover glass; a housing (114, 710) for mounting the display, the housing (114, 710) including a side surface member (114b, 714), at least part of the side surface member (114b, 714) configured to operate as a first antenna element; a first printed circuit board, PCB (142, 820), and a second PCB (144, 830) that are disposed inside the housing (114, 710); a back cover (116, 716) coupled to the housing (114, 710); and a communication circuit (160, 760) configured to feed the first antenna element, wherein the housing (114, 710) includes a support member for supporting the first PCB (142, 820) and the second PCB (144, 830), and the support member is disposed between the display (120, 720) and the first PCB and the second PCB; wherein a shield layer (130, 730) is interposed between the display (120, 720) and the support member, at least one of the shield layer (130, 730) and the support member being configured to operate as a ground area, wherein the support member includes a first area for supporting the first PCB and a second area for supporting the second PCB, wherein the first antenna element is connected to the first PCB (142, 820); wherein the first antenna element is electrically connected to the ground area by way of the first PCB (142, 820); wherein the first PCB (142, 820) comprises a ground layer, the ground layer electrically connected to the ground area via at least one ground point of the ground layer of the first PCB (142, 820), wherein the first antenna element is connected to at least one of the at least one ground point of the ground layer in the first PCB (142, 820), and wherein the communication circuit (160, 760) is configured to feed the first antenna element via a feeding point of the first PCB (142, 820); the electronic device further comprising: a nonconductive material interposed between the support member and the first PCB (142, 820); wherein a spaced distance between the first PCB (142, 820) and the support member is longer than a spaced distance between the second PCB (133, 830) and the support member by the nonconductive material; and wherein the distance between an upper surface of the support member and an upper surface of the nonconductive material is larger than the distance between the upper surface of the support member and an upper surface of the second PCB (133, 830). a nonconductive material interposed between the support member and the first PCB (142, 820); wherein a spaced distance between the first PCB (142, 820) and the support member is longer than a spaced distance between the second PCB (133, 830) and the support member by the nonconductive material; and wherein the distance between an upper surface of the support member and an upper surface of the nonconductive material is larger than the distance between the upper surface of the support member and an upper surface of the second PCB (133, 830).