You should never force quit apps by swiping them away
- Swiping apps up to close them is a total waste of time - and drains your battery
- iPhone apps open in the background are 'frozen' and take up no extra memory
- Apple expert John Gruber called it the 'single biggest misconception about iOS'
Millions of people are exhausting their iPhone batteries by wrongly swiping apps to force them to quit, according to an Apple expert who called it the 'single biggest misconception about iOS'.
Double tapping on the home button and then swiping apps up to close them is common practice but also a total waste of time - and drains your battery too.
Apps open in the background are essentially 'frozen', meaning they take up no extra battery or memory and should be left open, experts say.
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Double tapping on the home button and then swiping apps up to close them (pictured) is common practice but is a total waste of time - and drains your battery too
'The single biggest misconception about iOS is that it's good digital hygiene to force quit apps that you aren't using', said Philadelphia-based Apple pundit John Gruber on a blog post.
'The idea is that apps in the background are locking up unnecessary RAM and consuming unnecessary CPU cycles, thus hurting performance and wasting battery life', he said.
'That's not how iOS works. The iOS system is designed so that none of the above justifications for force quitting are true', he said.
According to Apple the only time users should force applications to close is if it becomes unresponsive.
When apps are sitting in the background they liberate the RAM they were using.
When it's swiped away it has to open up from scratch when it is next launched, meaning it consumes a considerable amount of energy.
'Apps in the background are effectively 'frozen', severely limiting what they can do in the background and freeing up the RAM they were using. iOS is really, really good at this', said Gruber.
'It is so good at this that unfreezing a frozen app takes up way less CPU (and energy) than relaunching an app that had been force quit.'
According to Apple the only time users should force applications to close is if it becomes unresponsive. When apps are sitting in the background they liberate the RAM they were using
'Not only does force quitting your apps not help, it actually hurts. Your battery life will be worse and it will take much longer to switch apps if you force quit apps in the background', he said.
Gruber, who has been raising awareness about this since 2012 described it as a 'pernicious myth' that is 'longstanding and seemingly will not die'.
If users are concerned about how much battery their apps are using they can check the battery option in the Settings app.
Apple has been contacted for comment.Â
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