The Sony Xperia 1 is exciting. It's unlike any phone I've tested—tall, solid, with a compelling point of differentiation. While the battery and software tweaks fall a bit flat, Game enhancer helps the 1 excel as a capable gaming device. Whether the form factor is a gimmick or a blessing depends on how you use your phone. I think plenty of people will be happily streaming 4K movies, shooting 4K film, and gaming on this tall, shy, and handsome device. But it won't stand toe-to-toe with some flagship phones of equal price.