What features in iOS 9 make a difference?

Share your experiences on exploring iOS 9 with us..

Whether you found hidden or little-known feature of iOS 9 or can explain how a big feature makes a difference, we're looking for objective reports of how the new OS affects your workflow.

Also provide details on how to achieve that feature, and if possible, include a relevant image too (hold Home and Lock for a screenshot on your iOS device).

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Search in Settings

This one is a total painkiller! It was always a mess trying to find that specific setting and now all you need to do is type in.

A button to go back to the last app you were in

Any time you're in one app and then suddenly you're in another app, without going through the Home screen or the App Switcher (such as if you tap on a push notification, or if an app deliberately sends you to another app like Facebook opening Messenger), you'll get a Back button.

Low Power Mode

This feature is also another big deal in terms of usability. More often than you would expect, the iPhone starts to drain battery like there's no tomorrow. In those situations that you still need it alive (for an emergency call, etc), the Low Power Mode will get you to shore.

What it does is stop any background requests like Mail fetch, Push Notifications, Apps Background Refresh, etc and also visual effects (as if Reduced Motion was on).

Spotlight quick conversions and calculations

You can now do a quick calculation on the Spotlight menu, just the basic stuff though. No square roots i.e.