In the Open applications view, you can see which applications and tasks are open in the background, and switch between them.
Select the desired application.
Tip:
To see an overview of open applications, place two fingers on the screen, and slide your fingers together. To return to the
more detailed view, slide your fingers apart.
Applications running in the background increase the demand on battery power and use memory. To close an application that you
are not using, tap and hold the Open applications view, and select on the application to close.