You may not have noticed but Apple added a new Back Tap feature to iPhone models running iOS 14 that allows users to double or triple tap the back of your phone to perform certain tasks on your smartphone.
To enable this feature, go to Settings on your iPhone and go to Accessibility > Touch and scroll down until you see Back Tap and select from the list of available options.
To enable this feature, go to Settings on your iPhone and go to Accessibility > Touch and scroll down until you see Back Tap and select from the list of available options.