How to maximize standby time of an iOS device / iPhone.
After closing down an app, it stays active in the 'fast app' switcher which you can access by a double click on the home button. Some apps stay active there after being closed and continue to consume battery power; for example if they make use of the GPS function. By killing those apps after use, you significantly increase the standby time of your device. You can kill the app from the 'fast app' switcher by 'holding a touch' for a few seconds on the app-icon and select the minus button that appears.







