Most of us will habitually close iPhone apps by flicking them away from the center of our home screen. This is often based on a hunch that force-quitting apps surely squeezes more juice from the battery and improves performance. But do you need to bother closing them, at all?
Surprisingly, the answer is no. Apple's own guidance on closing apps says that "you should only close an app if it's unresponsive". And there's a good reason for that – iOS has long been designed to make sure background apps barely touch your iPhone's RAM or CPU.
