People with less formal education also equals Facebook and Internet. I had a startup that sold B2B2C products to restaurants. I had to train wiaters and cashiers to use their product on their phone (as the customers would). Most of the times when I asked them to open the internet they would open Facebook app directly. They wouldn't understand "browser" or "chrome" either. When I clicked on the chrome icon for them, they would say "Oh, you mean Google??". And then I had to go on and explain that you could go to the URL field and type an specific address you of a site.