Samsung Galaxy S21, S21+, S21 Ultra home screen tips The home screen is part of the launcher. It's where you unlock your phone to, the place for app shortcuts or widgets, and where you return when you're finished doing something in an app. Turn on Android 11 gesture navigation: By default the S21 will offer Samsung's three icons for navigation. If you want to switch to Android 11's gestures open settings > display > navigation bar. Here you have the option for buttons or swipe gestures. You can tap on "more options" to customise, but with swipe gestures your phone will then let you swipe in from the side to go back, up from the bottom to go home, just like other Android devices.