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In iOS 7, Apple introduced a new multitasking feature, providing all apps with the ability to perform background updates. This feature prefers to update the user's most frequently used apps and prefers to use WiFi networks over a cellular network, without markedly reducing the device's battery life.
===Fast
Fast app switching allows apps to pause and resume themselves quickly and easily change to other apps.<ref name="AnandTech1">{{cite web|last=Shimpi|first=Anand|title=Apple's iOS 4 Explored|url=http://www.anandtech.com/show/3779/apples-ios-4-explored/2|publisher=[[AnandTech]]|accessdate=April 14, 2013|date=June 22, 2010}}</ref> An app that is on the screen is considered "running", while an app that is not on screen but is still in memory is considered "suspended".<ref name="PCWorld1">{{cite web|last=Perenson|first=Melissa|title=Multitasking on Apple's iPhone 4: How Does It Work?|url=http://www.pcworld.com/article/198296/iphone_4_multitasking.html|publisher=PC World|accessdate=April 14, 2013|date=June 8, 2010}}</ref> All apps that are built with iOS 4 SDK support fast app switching if running on iOS 4 and a compatible device.<ref name="AppleDev1">{{cite web|url=https://developer.apple.com/library/ios/#releasenotes/General/WhatsNewIniOS/Articles/iPhoneOS4.html#//apple_ref/doc/uid/TP40009559-SW1 |title=What's New in iOS: iOS 4.0 |publisher=Apple Developer |accessdate=2013-09-14}}</ref> Users can utilize fast app switching by activating the multitasking bar, which can be displayed by double-tapping the home button.<ref name="ArsTechnica1" /><ref name="PCWorld1" />
===Task
Task completion allows apps to continue a certain task after the app has been suspended.<ref name="MacWorld1">{{cite web|last=Snell|first=Jason|title=Inside iPhone 4.0's multitasking|url=http://www.macworld.com/article/1150496/multitasking_iphone.html|publisher=Macworld|accessdate=April 14, 2013|date=April 8, 2010}}</ref><ref name="CNet1">{{cite web|title=Apple iPhone 4|url=http://reviews.cnet.com/iphone-4-review|publisher=CNET|accessdate=April 14, 2013|date=June 23, 2010}}</ref> As of iOS 4.0, apps can request up to ten minutes to complete a task in the background.<ref name="iLounge1">{{cite web|last=Hollington|first=Jesse|title=Instant Expert: Secrets & Features of iOS 4|url=http://www.ilounge.com/index.php/articles/comments/instant-expert-secrets-features-of-ios-4/|publisher=[[iLounge]]|accessdate=April 14, 2013|date=June 21, 2010}}</ref>
===Ending Tasks===
Clearing applications from multitasking stayed the same from iOS 4.0 through 6.1.6, the last version of iOS 6. As of iOS 7, the process has become faster and easier. In iOS 7, you no longer have to hold the app icons in the multitasking bar to start clearing them, you can simply swipe them up off the screen. You can also clear up to three apps at once, as compared to a single app in iOS 4-6.<ref> http://www.tuaw.com/2013/09/18/ios-7-multitasking-has-a-brand-new-look/</ref>
==See also==
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