The Wi-Fi 6 in your Phone Everything you need to Know - Myphontech

WiFi is almost essential in smartphones when it comes to internet because of their speed and the cost of data when you download , it's integrated directly into the Soc , Huawei replaces the lack of 5G service in their last generation P50  with WIFI 6+ as Mr. Yu says: that 4G and WiFi 6+ are sufficient for most use cases. 

What's mean WIFI 6 ?

WiFi uses the IEEE 802.11 standard released in 1997 with a limited speed of 1-2 Mbps.
every year WiFi has improved, in 1999 the release of
802.11b with improved speed up to 11 Mbps known as: WiFi 1
Several generations follow one another, each of them better than their previous one.

Until now (2022) WiFi 6 is the latest Generation , used in FlagShip smartphones iPhone 13,Samsung S22 , Huawei P50 ..etc. 

The Samsung Galaxy  S10 is the first smartphone with WIFI6.

Wi-Fi Generations 802.11 a/b/g/n/ac/6 :

Until Now (2022) There is 6 Generation of WiFi  and 802.11 means their standard (IEEE 802.11)

WiFi    =  802.11

WiFi 1 =  802.11b  = b

WiFi 2 =  802.11a  = a

WiFi 3 =  802.11g  = g

WiFi 4 =  802.11n  = n

WiFi 5 =  802.11ac = ac

WiFi 6 =  802.11ax = ax

Now when you read the specifications of a phone, for example Samsung Galaxy S10

 Wlan: Wi-Fi 802.11 a/b/g/n/ac/ax dual-band, Wi-Fi Direct, hotspot 

means which is support all generation of WiFi!.

Comparison table between WiFi Generations:

Generation	IEEE Standard	Data rates(Max)	Frequency
Wi‑Fi 6E	802.11ax	3.6 Gbps	6 GHz
Wi‑Fi 6	802.11ax	2.4 Gbps	2.4/5 GHz
Wi‑Fi 5	802.11ac	1.73  Gbps	5 GHz
Wi‑Fi 4	802.11n	450 Mbps	2.4/5 GHz
Wi-Fi 3	802.11g	54 Mbps	2.4 GHz
Wi-Fi 2	802.11a	54 Mbps	5 GHz
Wi-Fi 1	802.11b	11 Mbps	2.4 GHz
Wi-Fi	802.11	2 Mbps	2.4 GHz

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  Source (Intel): Here

The Snapdragon 888 integrated subsystem FastConnect™ 6900 that supported WiFi6/WiFi6E and Bluetooth 5.2.