An electronic device includes an enclosure, a circuit board mounted in the enclosure, an electronic component attached to the circuit board, an antenna module mounted to the electronic component, and a mounting apparatus configured to mount the antenna module. The mounting apparatus includes a pressing member mounted on the circuit board. The mounting apparatus includes a pressing panel, a pressing block extending from the pressing panel, a positioning piece extending from the pressing panel, and a pressing piece extending from the pressing block. The pressing piece has a back wall. The pressing block presses the electronic component, the pressing panel presses the antenna module, and the back wall and the positioning piece abut against two adjacent sidewalls of the electronic component.