How to Kill or Force Quit Apps on iPhone 8 and iPhone 8 Plus<img style="float: left; margin-right: 10px" src="
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When you close an app on your iPhone, it will remain open in the background, but most of its activities will be paused till the next time you open it. If there are background tasks that need to be completed, the app will continue to execute them until needed, such as Location Services, VoIP calls, and so on.
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How to Kill or Force Quit Apps on iPhone 8 and iPhone 8 Plus