BARCELONA—TCL often uses Mobile World Congress to showcase new hardware, and I got a sneak peek at some really cool tech.
First up is a new version of TCL’s Nxtpaper technology. TCL isn’t calling it Nxtpaper 5.0, but it will succeed Nxtpaper 4.0. For now, it’s called Natural Light; it’s an apt name.
To date, TCL has built its Nxtpaper screens on LCD panels. Nxtpaper is the company’s blue light reduction technology that allows the screen to operate in four modes: full color, muted…

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