2.4g and 5g wifi difference

Some users have found two WiFi after purchasing the router. One of them shows 5G. We know that the normal WiFi frequency band is 2.4. So what is the difference between this 5Gwifi and 2.4? What is the difference between 5g and 2.4g? Let's give you a general knowledge about science.

Most of the Wi-Fi we have been using in the past is supporting the IEEE 802.11n (fourth generation) wireless standard, and it works in the 2.4 GHz band, so it is called 2.4g Wi-Fi, but strictly works at 5GHz. It is not necessarily 5G Wi-Fi in the frequency band, because the IEEE 802.11a (first generation) IEEE 802.11n (fourth generation) and IEEE 802.11ac (fifth generation) standards can work in the 5 GHz band.

Strictly speaking, only 802.11ac is the real 5G Wi-Fi (we call it ac 5G in this video). It is said that many routers supporting 2.4G and 5G dual-band are actually supporting the fourth. Generation of wireless standards, that is, 802.11n dual-band, and the real support for ac 5G routing is 400, 500 or even thousands of dollars.

The 5 GHz frequency is high, and there is much information that can be carried per unit time, so the speed is fast; the frequency is high and the wavelength is short, so the penetration ability is poor (including "penetrating air").

2.4G is just the opposite

What the average person needs to know is:

As long as the 5G signal has a signal, the speed is faster than 2.4G, even if the 5G has only 1 grid of 2.4G full grid.

5G signals interfere slightly with each other (multiple wifi will definitely interfere)

Whether the two devices can communicate, the deciding party is the weaker side, the most common router power is higher than the mobile phone, no need to specifically select the "through the wall" router

Unless your home is a villa, several floors, a few hundred square meters, otherwise 5G will not decay to the extent that the phone has no signal (but there are special circumstances)

2.4GWiFi is the wireless frequency of 2.4Ghz~2.5GHz. The standard bandwidth is 20MHz and the extended bandwidth is 40MHz.

5G WiFi is the 4.9GHz~5.9GHz radio frequency. The bandwidth can be increased to 40MHz or even 80MHz or higher, the transmission speed can be increased up to 1Gbps, and about 125MB of content can be transmitted per second.

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