When TCL first unveiled NXTPAPER, it said that it was designed for tablets and e-readers — not smartphones. You can disregard that comment now, because the company just unveiled its first smartphone using that very display tech. The TCL 40 NXTPAPER models are budget-oriented devices that promise "industry-leading eye comfort" with mid- to low-range specs.
TCL has described NXTPAPER as a "combination of screen and paper," noting that it offers 25 percent more contrast than typical E Ink displays, while being 65 percent more power efficient. Its latest version delivers up to 500 nits of brightness, and supposedly exceeds TÜV-certified levels of blue light reduction. TCL says the tech can help protect your eye health while maintaining color accuracy and avoiding screen yellowing. The screen's color temperature will adjust automatically based on the time and environment, too.