as long as wi-fi has a faster thruput signal than data, no need to from my standpoint.

when 601 came in, i switched to wi-fi & the 6g dl came in quickly.

i pay for 50mbps & generally see 65+, so my wi-fi is way faster than the network.

bottom line:

just because you see the wi-fi fan in the notification panel, you're not necessarily connected to wi-fi.