Apple unveils new iPhones every year, but with them comes something much more exciting: a new version of Cupertino's mobile operating system that powers its new devices and adds features to older iOS devices; iOS 13 works on all iPhones back to the 6s and SE.

If you've got a 6 or a 5s, sorry, you're going to have iOS 12.4.1 forever, but hey, that OS had some nice new features in its day, too.

There are lots of cool new things in iOS 13, many announced by Apple at its Worldwide Developer Conference. That includes dark mode (finally), the ability to sign in with Apple using anonymized email addresses, enhanced video editing, audio sharing on AirPods, and revamped apps and abilities for Reminders, Apple Maps, Mail, Memoji, and Siri Shortcuts.

But what about the new stuff in iOS 13 that Apple has barely talked? We've uncovered several tricks all iOS power-users will want to know.