iOS Tip 183 - Assistive Touch

AssistiveTouch floats a small menu on your display (which you can move about on the screen to wherever suits you) that allows you to carry out gestures such as pinching or multi-finger swipes with a single finger, offers quick access to a variety of functions, and even allows you to activate Siri without pressing the Home button.
There are three ways to activate AssistiveTouch:
    •    Tap Settings > General > Accessibility > AssistiveTouch, then switch on AssistiveTouch
    •    Tap Settings > General > Accessibility > Accessibility Shortcut and then activate AssistiveTouch
    •    Ask Siri: "Turn on AssistiveTouch"