As the first Firefox OS smartphone, the ZTE Open is an ambassador for its platform: it's built to prove that web apps can do the hard work of their native equivalents. It's also geared toward first-time smartphone owners with its simple interface and an $80 unlocked price. This combination of open, standards-based software and affordable hardware sounds like a dream for both developers and newcomers alike. But is that how it works in practice? Read our review and you'll find out.