A portable communication device comprising: a housing including: a plate forming at least a portion of a back surface of the portable communication device , and a conductive portion forming at least a portion of a side surface of the portable communication device ; a display accommodated in the housing and viewable through a front surface of the portable communication device ; a non-conductive member placed between the display and the plate ; and an antenna structure comprising one or more antennas formed to face the non-conductive member , wherein a surface of the non-conductive member includes: a first partial region of a surface of the non-conductive member , which faces the antenna structure , a second partial region of the surface of the non-conductive member formed adjacent to the first partial region, which faces the antenna structure , and a separating wall of the surface of the non-conductive member placed between the first partial region and the second partial region; wherein at least a portion of the non-conductive member is placed between the antenna structure and the side surface; and wherein the first partial region is configured such that a progress path of a radio frequency signal radiated from the one or more antennas is changed when passing through the first partial region. a housing including: a plate forming at least a portion of a back surface of the portable communication device , and a conductive portion forming at least a portion of a side surface of the portable communication device ; a plate forming at least a portion of a back surface of the portable communication device , and a conductive portion forming at least a portion of a side surface of the portable communication device ; a display accommodated in the housing and viewable through a front surface of the portable communication device ; a non-conductive member placed between the display and the plate ; and an antenna structure comprising one or more antennas formed to face the non-conductive member , wherein a surface of the non-conductive member includes: a first partial region of a surface of the non-conductive member , which faces the antenna structure , a second partial region of the surface of the non-conductive member formed adjacent to the first partial region, which faces the antenna structure , and a separating wall of the surface of the non-conductive member placed between the first partial region and the second partial region; wherein at least a portion of the non-conductive member is placed between the antenna structure and the side surface; and wherein the first partial region is configured such that a progress path of a radio frequency signal radiated from the one or more antennas is changed when passing through the first partial region. a first partial region of a surface of the non-conductive member , which faces the antenna structure , a second partial region of the surface of the non-conductive member formed adjacent to the first partial region, which faces the antenna structure , and a separating wall of the surface of the non-conductive member placed between the first partial region and the second partial region; wherein at least a portion of the non-conductive member is placed between the antenna structure and the side surface; and wherein the first partial region is configured such that a progress path of a radio frequency signal radiated from the one or more antennas is changed when passing through the first partial region. <EOS>