So, you've been binge-watching your favorite TV series on your iPhone all afternoon when out of nowhere, your screen starts dimming on you. No biggie — you probably just have auto-brightness on.

Not every setting on your iPhone is helpful all the time. Auto-brightness is intended to make it easier to see your screen, even if the light around you shifts. Sensors adjust the brightness reading ...

We’ve come a long way in adjusting the brightness setting on our iPhones to strike a balance between legibility (especially in sunlight) and battery life. Modern iPhones and iPads have bright enough ...