I think you missunderstood, "Generally, the 2.4GHz frequency is able to reach farther than the 5GHz frequency, so that might be the reason the wireless switch to 2.4GHz automatically on your HUAWEI...

Hello, Should the deco x60 auto switch from 5ghz to 2.4 when you get out of range? Because when I am in the garden it keeps my phone connected to 5ghz instead of going to 2.4 to get optimal...