A COMMON phone mistake that you think is saving battery life is actually doing the opposite.

Millions of us do it every single day – but even Apple has warned users not to bother.

Loads of iPhone owners spend time every day quitting their apps.

They'll swipe them closed, quitting them in order to save a bit of battery life .

But Apple says it doesn't actually save battery life at all.

"You should only close an app if it's unresponsive," Apple said.

The iPhone maker continued: "Typically, there's no reason to quit an app.

"Quitting it doesn't save battery power , for example."

In fact, it could even be making things worse.

After you move to a different app, the old one will be "suspended".

"After you've switched to a different app, some apps will run for a short period of ti

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