Sitting at the VA hospital this morning listening to a young man trying to explain to his (I believe) grandfather about closing apps that were running in the background on his Iphone. He was telling him to double click the Home Button and view all the apps running and then close them to save battery life. I have always made sure I close web browsers so they won't keep running but had always thought that installed apps just quit running when you use the Home Button to go back to home screen. Am I missing something here? How else do you close an app when you through using?