Starting with iOS 7, iPhone and iPad apps have been able to run in the background, refreshing even while not in use (prior to this only location services and music playback would run in the background). This allowed apps to update often instead of only updating when opened, so for example, you could get notifications from apps like Twitter and Facebook Messenger without having to launch them.
In addition to adding the Loop, Bounce and Long Exposure effects to Live Photos, iOS 11 introduces several new editing features. You can now trim them and change the key photo, which is the photo that displays in your album.
iOS 11 has finally added a way of shutting down and rebooting your iPhone or iPad without having to press the Home or Sleep/Wake buttons, which should be a welcome feature for those with malfunctioning buttons. The reboot button is buried annoyingly deep in the Accessibility features while the new Shut Down button is easily found in Settings. Here's how to do both:
Apple is set to expand the functionality of AirPods with the upcoming release of iOS 11. The update builds on a string of firmware updates that have been rolled out to Apple's wireless headphones since their initial release. The most significant new feature came with iOS 10.3, allowing AirPods to be found using the iCloud service Find My AirPods.
Like the Apple Watch SOS feature introduced with watchOS 3, iOS 11 gives your iPhone a shortcut that automatically calls the local emergency services (like 911) and your emergency contacts when invoked. Hopefully you will never have to use it, but if you ever find yourself in dire straits it could prove to be a lifesaver. Once you have it set up, Emergency SOS allows you to push the sleep/wake button rapidly five times, at which point it makes the call.