If you have a cell phone, you have mobile internet. Even if you're just using it as a hotspot for a laptop or tablet.
In any case, those purchasing EVs are overwhelmingly fine with using an app. Or the in-dash infotainment system that can do the same thing. Plug in where you want to go, it finds a route including chargers. Question: Do you use google maps?
Most people don't need to find EV charging stations, only those with EVs need to be able to, and they all generally have cellphones.
And why would they need an attendant? They're fine with being open at night. Gas stations only need attendants because of the large quantities of flammable liquids stored on location. Even with that, I've seen the occasional gas station that, late at night, doesn't have anybody and it is pay at pump only. But they get most of their profit from the attached convenience store, so they need an employee for that, to make money.
Now, there have been some problems with people stealing the charge cables for the copper in them, because current doesn't flow until the car and charger have verified the connection and negotiated charging stuff, so they're safe enough for unattended use.
But said people have also discovered that said lots tend to have very good cameras and end up being caught.