An electronic device in accordance with an example embodiment of the disclosure includes a first non-conductive cover defining a first surface of the electronic device, a second non-conductive cover including a first portion defining a second surface of the electronic device, and a second portion defining one portion of a lateral surface of the electronic device, a conductive frame defining an other portion of the lateral surface of the electronic device, and an antenna module, wherein the antenna module is positioned so that the one surface is substantially perpendicular to the second surface at a position within a specified proximity to the lateral surface of the electronic device and is configured to transmit and/or receive a signal through the lateral surface.