I often say my favorite iPhone features are hidden features, and the option to turn the Apple logo on the back of your phone into a button is near the top of the list. Indeed, there are several clever features built into the iPhone’s software — some of which you will find in our iPhone tips and tricks guide. However, Back Tap, the feature that turns the Apple logo into a button, deserves its own explainer. What makes Back Tap so appealing is that you don’t need one of the latest iPhone models to be able to take advantage of it.