Ever since Apple released iOS 10 in 2016, it's been possible to use the iPhone as a magnifying glass. You don't need a separate magnifying glass app; this helpful magnifier feature is free! Of course, the screen magnifier is not only useful for those with visual challenges, but also for any of us who has ever needed a reading magnifier to see more detail in an image. Better yet, the screen magnifier includes a light, as well as the ability to adjust contrast and color, which is a big help for those with color blindness. So how does this smartphone magnifier work? Read on to find out!