It is possible for an attacker to crack WPA3 in such a way that they can connect to the network. It's not fast or easy, but it can be done. It's not impossible

It is possible for an attacker to crack WPA3 in such a way that they can connect to the network. It's not fast or easy, but it can be done. It's not impossible that it could be done with a smartphone, although that would make the task even more difficult. Since you can't really "casually" crack WPA3 (as far as I'm aware), I doubt that anybody is doing it that way. They'd be more likely to pick up more suitable kit for $100-$200.