The list of actions is long and comprehensive, but you can use backtap to activate an accessibility feature, take a screenshot or turn the volume up and down.
Back Tap is only available on iPhone 8 or newer devices, and not on iPads or the iPod Touch.
This section gives you step by step instructions on how to enable and use Back Tap shortcuts in iOS 16, with pictures of the screens to help.
1. Tap the Settings icon on your Home screen to open the Settings app. Scroll down and tap Accessibility.
2. On the Accessibility screen, scroll down and tap Touch.
3. On the Touch screen, scroll to the bottom and tap Back Tap.
4. Set up a new Back Tap action by tapping either Double Tap or Triple Tap.
5. Choose an action to associate with that gesture. You can select any one of the following:
6. When you are happy with your settings, you can return to the Home screen by swiping up from the bottom of the screen or by pressing the Home button on devices with a physical Home button.