Apple's foldable iPhone display could have 'outstanding' energy efficiency

Important update on Apple’s first foldable iPhone model. The analyst claims that Apple is testing E Ink's color e-paper displays (EPDs) for use as cover screens in future foldable devices. In the same tweet, Kuo also added that Apple is also testing EPD technology in "tablet-like applications."

E Ink displays are currently used in Amazon’s Kindle e-reader devices. While these displays consume very little power, they are not as responsive as OLED panels. This is because E Ink has a lower refresh rate, which is why it's probably best suited for devices like the Kindle that don't have a lot of dynamic use.

The cover display in foldable phones is mainly used to check the time and notifications, so it doesn't have many dynamic uses. On the face of it, E Ink's display seems like a good fit for a device where refresh rate is less important, but power efficiency is. This is why Apple may be testing display technology for future foldable devices.

Color EPD has the potential to become a mainstream solution for foldable device coverage displays. Apple may cancel the project if it doesn't have the desired results, in which case the company will look elsewhere. Apple's foldable iPhone and foldable MacBook are rumored to be official in 2025, so Apple has plenty of time to decide which display technology to use for its foldable iPhone models.

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