Multitasking: kill a running app

After you've been using your iPhone for a while double-tap the Home button to see how many apps you have running - it will be more than you think! Normally you just let the iPhone decide how many it can keep running at once, but you can take matters into your own hands by killing running apps here. Just tap and hold on a running app and a "-" button appears against all of them. Tap this to kill the app.

Posted in: Tips and Tricks