Did you know that you can activate shortcuts, accessibility features, and iOS system actions by (double and triple) tapping the back of your iPhone?
Back Taps work from the home screen, within apps (including third-party ones), and even from the iPhone's lock screen, and they're sure to come in handy when navigating your device with one hand. Go to Settings > Accessibility > Touch . Swipe down and select Back Tap. Double Tap or Triple Tap to make your selection.