Meizu and Vivo are trying to usher in a new breed of smartphones, a kind of smartphone that even Apple is believed to be considering. The kind of smartphone that's glass on all sides and edges, unbroken by any seam or hole, aside perhaps for the cameras on the back. The Meizu Zero and Vivo APEX 2019 Concept Phone are truly sights to behold. They still leave a few questions open, probably to be answered at MWC 2019 next week. But whether they get answered or not, there are a few things that make this kind of unibody phone far too ahead of their time.