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With the previous operating systems, I would close down the apps that were still running in the background in order to preserve battery life, but hitting the home button twice and then holding down the app icon doesn't prompt the option to close apps down anymore. Any help would be appreciated, I am sure it is just something stupid that I overlooked.
Double-tap on the Home button. You will see an image of the app above the actual icon. Slide the image up to kill it.