Xiaomi is making the most of its partnership with Leica, and the new Xiaomi 13 Ultra represents the most technically impressive release from the pair yet. It’s absolutely all about the camera, with Xiaomi and Leica filling it with technology and focusing key design elements around Leica’s M camera series. It’s more camera than phone — in a way that we haven’t seen in a while. It has also got all the power of the Samsung Galaxy S23 Ultra and promises to rival it in terms of the camera’s ability too, but it doesn’t try to be all things to...