The latest Wi-Fi standard 802.11ac, which has been shipping for the past 2 years, already works <i>only</i> in the 5GHz band. There has been a push for Wi-Fi to work in the 5GHz band ever since the 802.11n years with the &quot;dual-band&quot; routers, mainly because the 2.4GHz band was getting too crowded&#x2F;routers were interfering with each other through walls too easily.