Competitive Pokémon is on phones now, but you still need a Switch to become a champion

To get started with competitive Pokémon battles, all you need is your phone. But to compete at the highest level, like at the Pokémon World Championships, you're going to need a Switch. And there doesn't seem to be a good reason why. Battle simulator Pokémon Champions originally launched on the Switch and Switch 2 in April, with the mobile version...