Activate multitasking tray to close out of apps in iOS 6 for iPhone, iPod Touch, and iPad (Mini)

Published November 24, 2012 at 640 × 960 in Hard reset your iPad, iPhone, and iPod Touch every couple weeks to maintain speed of device
Hard Reset, Improve Battery Life, Increase Speed in iOS 6

Double tap the “Home” button to activate the multitasking tray. Tap and hold any of the app icons in the multitasking tray until you see a red minus sign. Tap this to fully close out of an app.