I did a one-year trial during which I only used an e-ink phone. So, no LCD—just the screen at work.
I would like to report my positive experiences; this is not a placebo effect, as others have also noticed the changes.
- **More focused and able to concentrate deeply**
- **Less stressed in general, with more energy to accomplish tasks**
- **Fewer headaches and less mental fatigue**
- **Reduced mental fog and improved reasoning speed**
If I were to use an IPS smartphone again, I believe these positive effects would revert to being negative. One thing I noticed, however, is that while using the e-ink phone, my sensitivity to artificial lights has decreased. Now, the lights from cars, street lamps, and digital signs bother me more than usual.