Whether it's because you've got small hands, prefer a more pocketable device, or simply don't care about having a giant display, when it comes to truly small phones, there just aren't a lot of options. Your choices are essentially the iPhone SE, the standard Pixel 2, and this: the Xperia XZ2 Compact. However, with Apple not having bothered to update the SE in more than two years, and the Pixel 2 having been cursed with a half-assed design that makes it seem like the neglected member of Google's 2017 offerings, even those handsets have issues. I know small phones aren't super popular, but it's almost comical at how little effort companies put into making a modestly-sized devices with competent specs.