Here’s how to do tasks like opening control center or going to the Home Screen with just a tap on the back of your iPhone.
Open up the settings app on your iPhone and tap on "Accessibility".
Once you're on the "Accessibility" page tap on "Touch".
Then one the "Touch" page tap one "Assistive Touch".
"Once you're on the "Assistive Touch" setting you will find the option for "Single-Tap", "Double-Tap", or "Long Press".
Tap on one of the settings and then you'll have the option to choose what task your iPhone will do when you do that action you've chosen.
Features like "Single-Tap" and "Double-Tap" make it much easier for people who have accessibility issues or general iPhone users to easily navigate through their iPhone and apps.