You can double-tap the back of your phone to:
- Open an app of your choice
- Record your screen or take a screenshot
- Switch to your last app or return to the home screen
- Start and stop music
Change what happens when you tap twice
Go to Settings > Gestures.
Or, open the Moto app and tap
> Gestures.
- Tap Quick Launch and make sure it's on
. - Select what you want your phone to do when you tap the back twice.