Can EVs be charged on the road without a phone?
My experience with a Bolt is that no, you'd have a rather miserable experience if you tried owning an EV without also having a smartphone. In my case, it's absolutely essential for locating charging stations and checking how busy they are. As for payment, I've only ever seen card readers at EA charging stations - everywhere else I've charged, an app has been mandatory.
Unlike my Bolt, I know Tesla has better integration for things like seeing the locations and status of charging stations directly on the infotainment, and you're automatically billed for charging on their Supercharger network through an account you set up for the vehicle, so you technically don't need a smartphone with a Tesla. Even then though, there's some functionality you're missing out on without using the Tesla app to connect to your car, so I'd say in general it's probably not ideal to have an EV if you refuse to own a smartphone.