For someone who wants the absolute cutting edge in mobile tech, Lenovo’s super-sized Android handset is the obvious pick. The Phab 2 Pro is the first smartphone to support Google’s augmented-­reality Tango platform, which lets you view 3-D software overlays based on what’s captured by the device’s wide-angle camera and depth sensor—essentially providing a unique way to interact with your environment. For example, an app from the Lowe’s home improvement chain lets a user see how an appliance would look in his or her home, moving the items around at the tap of a finger. While Tango is the standout feature, the phone also features a spacious 6.4-inch display and a fingerprint scanner.