Also, there is a new accessibility feature in iOS 14 called Back Tap. Back Tap is described by Apple as "Back Tap - Built to create a simple and easy way to trigger convenient tasks for those with accessibility needs. A quick double or triple tap on the back of your iPhone can be configured to trigger a number of actions, such as opening the Magnifier, or starting VoiceOver when your iPhone is in your pocket. It can even map to common system features such as Control Center, or accessibility-specific activities such as Switch Control actions.17"
Source:
https://www.apple.com/ios/ios-14/features/#mn_p
Here is a link to a article here on iMore that explains how to set this feature up:
https://www.imore.com/how-make-shortcut-back-tap-accessibility-feature