Regarding E - INK technology, for B/W spots on the screen, if their diameter does not exceed 0.5mm, they are all regarded as normal. All E - INK products comply with this industry standard. If customers are not satisfied, they can apply for return or exchange, but it cannot be regarded as a malfunction.
Over 99% of mobile apps are optimized for LCD/OLED screens with: High refresh rate expectations; Color-rich interfaces; Animation-heavy designs; These design choices conflict with E Ink's natural strengths in static content display.Energy Efficiency Trade-off: E Ink relies on electrophoretic particles that physically move to form images, resulting in slower refresh rates, makes it inherently unsuitable for conventional app interfaces designed for always-powered displays. If the buyers are not satisfied, they can apply for return or exchange, but it cannot be regarded as a malfunction.