After just a few hours, your iPhone's app switcher can become cluttered and even chaotic enough that you won't even want to use it. If you like your app switcher clean and tidy, with only your current session's apps accessible, there's a trick to force-quitting all apps simultaneously rather than one by one. Before going any further, know that closing apps on your iPhone will not improve battery life or speed up iOS. Apple only recommends you "close an app only if it's unresponsive" because iOS automatically optimizes the background apps on your iPhone to free up resources for apps you are... more
