Sony has failed to keep up with the smartphone crowd over the last few years, but it’s one of few still making small phones that can pack a punch. The Sony Xperia XZ1 Compact has the same cutting-edge processor, camera, and battery in as the flagship XZ1 . It’s fast, slick, and can be comfortably used one-handed. It stands out in a sea of large-screen phones, but it’s not an unqualified success. At $600, we wish Sony could have found a way to shrink the price tag as well as it did the hardware. There are things we like very much, but there are also some serious issues here.