I don't add the operator, just that you can get a cell connection. Nothing displays this tag, but it's searchable since I have data loaded into postgresql on my laptop. Cell phone access is everwhere for many people, so seems silly to map it. But in remote areas it's useful for emergencies (or field work) to save long drives on jeep roads.

I'll change what I added to internet_access=yes, and can still filter that through camp_{pitch,site} when I'm looking for a cell connection. I'll adjust my XLSForm to do the same thing.
