A wireless communication device includes a plurality of light sources and a light guide including a light guiding element and a light shielding element. The light guiding element includes a plurality of guiding portions. Each guiding portion includes an expander having a first end corresponding to a respective one of the light sources and a second end opposite to the first end. The second ends of the expanders collectively form a continuous end surface. At least one cavity is defined between each two neighboring guiding portions. The light shielding element includes at least one shielding portion received in the at least one cavity to prevent light interference between the plurality of guiding portions.