Switching your screen to dark mode doesn’t just look cool — it actually saves energy, especially on phones with OLED or AMOLED displays.
In these screens, every pixel lights up individually. When you use a light background, thousands of pixels stay active, drawing more power. But in dark mode, most pixels turn off or dim to display black, reducing electricity use.
That’s why dark mode can extend battery life by up to 30–40%, depending on brightness and screen size. It also gives your eyes a break, especially in low light, because it reduces glare and blue light exposure.
However, on older LCD screens, dark mode doesn’t make a big difference — those displays use a single backlight that stays on no matter what’s shown.
So the next time you switch to dark mode, remember: it’s not just a style choice. It’s a small, smart way to save power and protect your eyes — proof that sometimes, less light makes more sense.