This is how you can use the back tap feature on the iPhone
Back Tap is one of the simplest ways to truly put an iPhone function you use all the time at your fingers. It’s exactly what it sounds like: a means to activate various phone functionalities by tapping the back of your phone – sort of like an extra, user-configurable button. It was introduced with iOS 14, and it works on devices as old as the iPhone 8, which was released five years ago — so you’re very likely to have a compatible phone. If you do and you want to explore this sort of hidden feature, this tutorial will show you exactly how you can use this back tap feature and various operations that can be mapped to this gesture.
Without further ado, let’s jump right in –
Step 1. Open the Settings app on your iPhone.
Step 2. Scroll through the settings menu, and tap on the ‘Accessibility’ option.