An electronic device comprising: a housing comprising: an outer periphery member comprising: a first outer periphery member forming a first portion of an exterior sidewall and configured to operate as an antenna, the first outer periphery member comprising a conductive material; a second outer periphery member forming a second portion of the exterior sidewall and comprising a conductive material; and an intermediate electrically-insulating element forming a third portion of the exterior sidewall positioned at least partially within a gap defined between the first outer periphery member and the second outer periphery member, the intermediate electrically-insulating element formed from a plastic that is bonded to the first and second outer periphery members; a front cover assembly comprising a front glass housing member defining a front surface of the electronic device and coupled to the outer periphery member; and a back cover assembly comprising a back glass housing member defining a back surface of the electronic device and coupled to the outer periphery member; and an internal platform attached to the outer periphery member and offset from a front and back surface of the outer periphery member, the internal platform comprising a metal element that is electrically coupled to the first outer periphery member; and a wireless communication circuit positioned within the housing. a housing comprising: an outer periphery member comprising: a first outer periphery member forming a first portion of an exterior sidewall and configured to operate as an antenna, the first outer periphery member comprising a conductive material; a second outer periphery member forming a second portion of the exterior sidewall and comprising a conductive material; and an intermediate electrically-insulating element forming a third portion of the exterior sidewall positioned at least partially within a gap defined between the first outer periphery member and the second outer periphery member, the intermediate electrically-insulating element formed from a plastic that is bonded to the first and second outer periphery members; a front cover assembly comprising a front glass housing member defining a front surface of the electronic device and coupled to the outer periphery member; and a back cover assembly comprising a back glass housing member defining a back surface of the electronic device and coupled to the outer periphery member; and an outer periphery member comprising: a first outer periphery member forming a first portion of an exterior sidewall and configured to operate as an antenna, the first outer periphery member comprising a conductive material; a second outer periphery member forming a second portion of the exterior sidewall and comprising a conductive material; and an intermediate electrically-insulating element forming a third portion of the exterior sidewall positioned at least partially within a gap defined between the first outer periphery member and the second outer periphery member, the intermediate electrically-insulating element formed from a plastic that is bonded to the first and second outer periphery members; a first outer periphery member forming a first portion of an exterior sidewall and configured to operate as an antenna, the first outer periphery member comprising a conductive material; a second outer periphery member forming a second portion of the exterior sidewall and comprising a conductive material; and an intermediate electrically-insulating element forming a third portion of the exterior sidewall positioned at least partially within a gap defined between the first outer periphery member and the second outer periphery member, the intermediate electrically-insulating element formed from a plastic that is bonded to the first and second outer periphery members; a front cover assembly comprising a front glass housing member defining a front surface of the electronic device and coupled to the outer periphery member; and a back cover assembly comprising a back glass housing member defining a back surface of the electronic device and coupled to the outer periphery member; and an internal platform attached to the outer periphery member and offset from a front and back surface of the outer periphery member, the internal platform comprising a metal element that is electrically coupled to the first outer periphery member; and a wireless communication circuit positioned within the housing.