Looking on the internet deeply has found these results:

free wifi is the most popular phrase on the web.

free wlan 1157,000 results on the web	free wifi 195,600,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	In Estonia you can use your computer anywhere and you have free Wifi. Good, 'cause I didn't get jealous when you started getting free wifi from that cable guy who fell off the roof. this is free WiFi. I know how important your career is, and I can't see you running a corporation over the free wifi at the Butter Stick Bakery. That, and they have free WiFi. Good coffee, free wifi, no cellmates. We just traced it to a doughnut shop with free WiFi. And technology has set us free

free wlan

1157,000 results on the web

free wifi

195,600,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

In Estonia you can use your computer anywhere and you have free Wifi.
Good, 'cause I didn't get jealous when you started getting free wifi from that cable guy who fell off the roof.
this is free WiFi.
I know how important your career is, and I can't see you running a corporation over the free wifi at the Butter Stick Bakery.
That, and they have free WiFi.
Good coffee, free wifi, no cellmates.
We just traced it to a doughnut shop with free WiFi.
And technology has set us free