I have used an e-ink phone for messaging and reading for a few years. It really helped with occasional headaches and the general eye strain. Switching back to

I have used an e-ink phone for messaging and reading for a few years. It really helped with occasional headaches and the general eye strain. Switching back to a regular OLED phone (because of OS/firmware security), I noticed eye strain again, after just a few days of use. Usability in sunlight and battery endurance are real advantages I miss. Waiting for a big manufacturer to design and market a secure eInk phone, targetting the people who prioritize messaging/reading/navigation over TikTok, Instagram, YouTube and the like.