Last night I asked my wife, "How do you do that thing on your phone where recent apps pop up, and you can swipe some away or choose one?" She says, "You double tap the home button, and you use it to stop apps from running in the background to conserve battery." So, I tried it and said, "I closed 17 apps that I wasn't using." She said, "No wonder your phone is always dying." I wish I had asked her about it months ago when I first seen her do it.