Turn Your iPhone Into a Magnifying Glass
Granted, this isn’t so much a feature as a stand-alone app. Still, Apple’s Magnifier app is the perfect tool for those of us who don’t like wearing our glasses all the time.
As you can guess by its name, the Magnifier app uses your iPhone’s camera and turns it into a magnifying glass, making it easier to read small letters or see other things in front of you.
To use your iPhone as a magnifying glass, just open Apple’s Magnifier app; it should be installed by default, but you can download it from the App Store if you can’t find it on your iPhone. If you find yourself using it often, you can also set up an Accessibility Shortcut to access it more quickly.