As with the OnePlus 5 Face Unlock beta, you won't want to install this if you absolutely depend on a glitch-free phone. And be sure to back up your info if you decide to revert back, since you'll have to wipe the slate clean. So long as you can live with those caveats, though, you won't have to look on with envy as your Pixel-toting friends enjoy Oreo's perks.