An electronic device comprising: a housing including a plurality of housing modules; and a printed circuit board that includes at least one antenna power feeding unit (121, 122, 123) positioned thereon, wherein the printed circuit board is arranged within the housing, and the plurality of housing modules (111, 112, 113; 212, 213; 711, 712, 713; 812, 812a-1, 812a-2, 812b, 813; 912a-1, 912a-2; 1011, 1011a-1, 1011a-2, 1011a-3, 1012, 1013, 1013a-1, 1013a-2, 1013a-3) are configured to be assembled with each other, wherein the plurality of housing modules includes: a first housing module including a display device; a second housing module joined to an upper end of the first housing module and at least partially formed of a conductive material; and a third housing module joined to a lower end of the first housing module and at least partially formed of a conductive material providing an antenna having first antenna characteristics, wherein at least one of the second housing module and the third housing module is configured to be detached or attached; wherein at least one of the conductive materials at least partially forming the housing modules is electrically connected to the at least one antenna power feeding unit (121, 122, 123) of the printed circuit board to function as an antenna of the electronic device, wherein at least one of the plurality of housing modules is formed from a conductive material joined to a non-conductive material, or by a conductive material coated or deposited on a non-conductive material; characterized in that the third housing module having the first antenna characteristics is configured to be detached from the first housing module and a third housing module having second antenna characteristics different from the first antenna characteristics is configured to be attached to the first housing module. a housing including a plurality of housing modules; and a printed circuit board that includes at least one antenna power feeding unit (121, 122, 123) positioned thereon, wherein the printed circuit board is arranged within the housing, and the plurality of housing modules (111, 112, 113; 212, 213; 711, 712, 713; 812, 812a-1, 812a-2, 812b, 813; 912a-1, 912a-2; 1011, 1011a-1, 1011a-2, 1011a-3, 1012, 1013, 1013a-1, 1013a-2, 1013a-3) are configured to be assembled with each other, wherein the plurality of housing modules includes: a first housing module including a display device; a second housing module joined to an upper end of the first housing module and at least partially formed of a conductive material; and a third housing module joined to a lower end of the first housing module and at least partially formed of a conductive material providing an antenna having first antenna characteristics, a first housing module including a display device; a second housing module joined to an upper end of the first housing module and at least partially formed of a conductive material; and a third housing module joined to a lower end of the first housing module and at least partially formed of a conductive material providing an antenna having first antenna characteristics, wherein at least one of the second housing module and the third housing module is configured to be detached or attached; wherein at least one of the conductive materials at least partially forming the housing modules is electrically connected to the at least one antenna power feeding unit (121, 122, 123) of the printed circuit board to function as an antenna of the electronic device, wherein at least one of the plurality of housing modules is formed from a conductive material joined to a non-conductive material, or by a conductive material coated or deposited on a non-conductive material; characterized in that the third housing module having the first antenna characteristics is configured to be detached from the first housing module and a third housing module having second antenna characteristics different from the first antenna characteristics is configured to be attached to the first housing module.