Force the app to quit

Instructions apples to devices running iOS7.0 or newer.
If your device is running an older version of iOS, scroll down for instructions.

This video shows how to force quit apps on iOS 7

Requires iOS 6 or older

In some situations where the app is non-responsible or is not behaving correctly, force quitting the app will fix the issues experienced. Here is how.

Double-click the home button to display the recently accessed applications. Press and hold any of the icons shown, then navigate to the application you want to quit and tap the red circled minus button. This sends a signal to the application in question that allows it to quit. The application will be re-added to the recents list the next time you launch it.