Should I turn my Wi-Fi off when I'm at home connected to my home internet

[Kay]

Should I turn my Wi-Fi off when I enter my home and I'm connected to my home internet? Does it use up my mobile data if I was to leave it on while I'm at home? I am so confused what do i do?

 

[VDub2174]

You need wifi on in order to stay connected to your home internet.

 

[r56mcs]

. .Unless he has a cell tower under his roof.