The latest update to iPhone software added a nifty new feature that you probably don't know about. If you installed the iOS 14 update, the back of your phone is a giant touch-sensitive button that you can double or triple tap to trigger specific functions on your phone. The best part is you can decide which shortcut this button activates. From taking a screen shot to activating Siri. The new software feature works on iPhone 8, 8 Plus, iPhone X, iPhone XS, XS Max, iPhone XR, iPhone 11, 11 Pro, and 11 Pro Max models and can be activated in settings>accessibility>touch>backtap. You can set up two separate shortcuts, with one activated by a double tap and the other with a triple tap.