Dual-frequency Wifi refers to the device simultaneously supports 2.4GHz/5GHz dual-band wireless signals, which can support a complete wireless network containing 802.11a/b/g/n, which belongs to the fifth generation of Wi-Fi transmission technology (5G Wi-Fi), usually our daily contact with the router or some of the Wifi devices are to support 2.4Ghz Wifi, as long as some high-end routers or some future tablets and boxes and smartphones may use this newer generation of wireless technology. The newer generation of wireless technology is likely to be used in some high-end routers or future tablets, boxes and smartphones.

The advantage of dual-band Wifi devices is that they have stronger and more stable Wifi signals, higher transmission speeds, and the ability to save power for wireless devices, which will meet the future demand for high-definition and big data wireless transmission. Currently, routers and devices that support dual Wifi are still very small.