Ming-Chi Kuo, an analyst specializing in Apple, says the company is testing with an electronic ink screen which can be for an external display or part of a foldable device.
E-ink is already used by Amazon Kindle, but Apple has been researching its use since 201. Now Kuo says the company is actually testing a color version.
The claim that this technology could be used as an external display due to its energy savings suggests that Apple could be considering a foldable smartphone. It also points to the possibility that you are thinking about a tablet.
Apple is testing E Ink’s Electronic Paper Display (EPD) for future foldable device cover screen and tablet-like apps. Color EPD has the potential to become a mainstream solution for mandatory coverage/second screen of foldable devices, thanks to its excellent energy savings.
— 郭明錤 (Ming-Chi Kuo) (@mingchikuo) May 17, 2022
While he doesn’t cite any sources, he seems to be saying this as something that’s happening at Apple right now rather than speculation.
Ming-Chi Kuo recently predicted that Apple will release a foldable iPhone in 2023, although he thinks the display will be high-res QHD+ rather than e-Ink.