there are https://hisenseeink.com/
but the technology has a very bad refresh rate, so you cant use it for games or videos, and it cant do smooth scrolling.
its also not great for color.
There are other technologies (like those in the gameboy color) that maybe could do better, but no one actually WANTS a phone like this since you would have to use an external light to read it and overall experience isnt great.
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