Wifi protocol Connection problem: wifi 802.11a/b/g/n/ac/.

[Angelo005]

Hello all,
I have a connection problem!
I have a Samsung Galaxy Tab A10.1, SM–T515, 32gb, 2019. Uk
Default Connection for this tab is: WLAN: WI-FI 802.11a/b/g/n/ac, dual band, WIFI Direct, hotspot.
I believe it's not performing at the network speed n/ac.
My mobile phone: Samsung Galaxy S7, shows a much faster connection speed, eg, network speed; 866Mbps. My Samsung Galaxy Tab A 10.1 is only showing speeds at 433Mbps! The Tabs connections speed should be the same as the mobile!
Please help me resolve this.
Thank you