The present invention relates to the field of communications technologies and discloses a communications device. The communications device includes a metal carrier having a mounting plane, where at least one mounting area is defined on the mounting plane, and further includes an antenna element disposed in each mounting area. The mounting area is an area in which the mounting plane intersects a circle centered at a feedpoint of the antenna element in the area and whose radius does not exceed a specified radius. When a boundary line of the mounting area includes a boundary line of the mounting plane, a distance from the feedpoint in the mounting area to the boundary line of the mounting area is less than or equal to a specified distance; and/or when a boundary line of the mounting area includes a vertex of the mounting plane, a distance from the feedpoint in the mounting area to the vertex is less than or equal to a specified distance. The metal carrier is considered as a part of an antenna body for joint design. The antenna element is arranged in a corner position on the metal carrier. A feed position on the antenna element is designed to obtain relatively good antenna roundness performance and enhance an antenna signal coverage effect.