Got a Nexus 6? Itching to dump your traditional wireless service provider for something a bit more ambitious? Google’s got you covered. After months of speculation and a not-so-subtle nod from Sundar Pichai at Mobile World Congress, the search giant’s new mobile phone service — Project Fi — is finally official. We’re still sifting through the details, but the company’s plan is both as savvy and as unorthodox as we’d expect: Instead of trying to build out and maintain its own nationwide network of cell towers and repeaters, Google’s instead combining Sprint and T-Mobile’s coverage footprints with millions of pre-vetted WiFi hotspots to provide users with the fastest, most seamless mobile experience it can in real-time.