An Apple executive has dispelled the most persistent myth about the iPhone.. . Shutting apps from the multitasking menu does not save battery life and there is no need to do it, Apple's head of software Craig Federighi has said... Using the multitasking menu to close apps has become almost a superstition. Many people are convinced that it is necessary to shut them down manually so that they are not running in the background. But it's not at all necessary, since Apple's iOS works to ensure that when apps are running in the background they do not use up unnecessary processing power or battery life. Most apps are put into a frozen state when they are quit with the home menu, meaning that they
lie dormant until they are woken again once they are opened.
. . In a new email shared with 9to5mac, Mr Federighi addressed that question head-on and rejected any suggestion that it was helpful. The email was initially sent to Apple CEO Tim Cook but was passed onto his head of software, the blog reported.

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