Have you ever looked at a chameleon and thought, "Why can't my smartphone do that?" Vivo apparently has, and is working on a smartphone prototype that can change color using electrochromic glass. This is the same special material OnePlus recently used to hide a smartphone camera. But while OnePlus only covered the camera module in this fancy glass, Vivo has made the entire back panel out of the stuff, showing it off on video earlier this week.

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