Vivo's V23 mobile has a color-changing back - look at the pictures!

Expose the V23 to sunlight and the UV rays make the fluorite AG glass panel shift from a bronze/orange to a metallic blue/green. Ta-da! (image credit: Pocket-lint)
It's not a trick that uses angle of view, either, the color is entirely dependent on sunlight exposure. It's quite a two-tone look at all times though. (image credit: Pocket-lint)
The V23 is smaller and less powerful, but also squarer and more iPhone-like by design. The Pro has a soft surve that makes it look more elegant we think. (image credit: Pocket-lint)
Both have triple rear cameras, comprising a main (64-megapixel or 108MP for Pro), wide-angle (8MP) and macro (2MP). On the front there's a dual selfie cam too. (image credit: Pocket-lint)
But, right now, you can only buy the V23 series in India. Which will make the rest of the world, um, blue with envy? Yeah, we'll go with the made-up expression. (image credit: Pocket-lint)