No matter what subtleties you wrap the difference in, relative importance is what you're communicating to everyone else at the table whether you intend to or not. If that's your priority then so be it, but don't be surprised if people who prioritized being present at dinner aren't fond of your choice.

I'm not trying to change you though. Like I said before, I just wouldn't want to eat dinner with you if you couldn't leave the phone alone.