When I mentioned diversity, what I actually had in mind was that all tech workers in California have wifi, and probably find this so normal to connect your phone to wifi that they expect any normal user will do this on a daily basis.

I'm not a grandma but I'm a tech worker with a very different life style. Like the person I was replying to's grandma, I have no wifi. Like her, I have to fake it from time to time so that my Android phone will backup photos, accept to download Google drive documents, etc.

So the diversity I had in mind is rather a diversity in location and lifestyle.