https://www.theverge.com/circuitbreaker/2018/12/11/18135595/vivo-nex-2-dual-display-edition-announced-second-screen

Vivo has announced its followup to one of the most head-turning phones of 2018, the Nex. The new Nex Dual Display Edition has a similar curvy design and devotion to eliminating the display notch, but it takes a different approach: whereas the original Nex had a pop-up selfie camera, the new model doesn’t need one in the first place.

That’s because, as the name suggests, there’s an entire second screen on the back of the phone — you can use it to frame selfies with the unusually ringed rear camera setup. Vivo has gone for a 12-megapixel primary camera backed with a 2-megapixel secondary module, and there’s also a third f/1.3 lens paired with a time of flight (TOF) 3D module. Vivo says the TOF 3D camera adds point-to-point distance measuring and secure facial recognition to unlock the rear display. It can also be used for “personalized beautification,” whatever that means. The company showed off the 3D object-scanning capabilities of its prototype time-of-flight tech at MWC Shanghai this year.