An electronic device comprising: a housing comprising a front surface of the electronic device, the front surface of the electronic device comprising or formed of a glass plate; a display panel disposed under the glass plate; a conductive sheet attached to the display panel or integrated with the display panel; a support including a first portion comprising a side surface of the electronic device and a second portion comprising a mounting space for parts, wherein the first portion of the support includes a metal portion configured as a radiator, and wherein the second portion of the support includes a first surface, a second surface, and at least one via hole or recess extending from the first surface to the second surface; a printed circuit board, PCB, including a ground; a wireless communication circuitry disposed on the PCB; at least one processor disposed on the PCB operatively connected with the wireless communication circuitry; a flexible PCB, FPCB, electrically connected with the conductive sheet and configured to operatively connect the display panel with the at least one processor, and a cover comprising a rear surface of the electronic device, wherein the glass plate, the display panel, and the conductive sheet are seated on the first surface of the second portion of the support, wherein the PCB and the cover of the electronic device are seated on the second surface of the second portion, wherein the second portion of the support electrically connects the support with the ground of the PCB by making contact with one of conductive contacts of the PCB on at least one point, wherein the FPCB includes a first path extending from the first surface to the second surface through the at least one via hole or recess of the second portion of the support, wherein the first path of the FPCB extending to the second surface electrically connects the conductive sheet with the ground of the PCB, wherein the conductive sheet is electrically connected with the metal portion of the support through a selection part comprising selective connection circuitry, and wherein the wireless communication circuitry is configured to receive a signal having a specific frequency band based on an electrical path including the wireless communication circuitry, the metal portion of the support, the selection part, and the conductive sheet. a housing comprising a front surface of the electronic device, the front surface of the electronic device comprising or formed of a glass plate; a display panel disposed under the glass plate; a conductive sheet attached to the display panel or integrated with the display panel; a support including a first portion comprising a side surface of the electronic device and a second portion comprising a mounting space for parts, wherein the first portion of the support includes a metal portion configured as a radiator, and wherein the second portion of the support includes a first surface, a second surface, and at least one via hole or recess extending from the first surface to the second surface; a printed circuit board, PCB, including a ground; a wireless communication circuitry disposed on the PCB; at least one processor disposed on the PCB operatively connected with the wireless communication circuitry; a flexible PCB, FPCB, electrically connected with the conductive sheet and configured to operatively connect the display panel with the at least one processor, and a cover comprising a rear surface of the electronic device, wherein the glass plate, the display panel, and the conductive sheet are seated on the first surface of the second portion of the support, wherein the PCB and the cover of the electronic device are seated on the second surface of the second portion, wherein the second portion of the support electrically connects the support with the ground of the PCB by making contact with one of conductive contacts of the PCB on at least one point, wherein the FPCB includes a first path extending from the first surface to the second surface through the at least one via hole or recess of the second portion of the support, wherein the first path of the FPCB extending to the second surface electrically connects the conductive sheet with the ground of the PCB, wherein the conductive sheet is electrically connected with the metal portion of the support through a selection part comprising selective connection circuitry, and wherein the wireless communication circuitry is configured to receive a signal having a specific frequency band based on an electrical path including the wireless communication circuitry, the metal portion of the support, the selection part, and the conductive sheet.