Nokia 5 User Guide
To see which apps you have open, press Overview check_box_outline_blank key.
To switch to another app, tap the app you want. To close an app, tap X next to it on the screen.
To go back to the previous screen you were in, tap the Back key. Your phone remembers all the apps
and websites you've visited since the last time your screen was locked.
To go to the Home screen, tap the Home key. The app you were in stays open in the background.
Nokia 5 Manual PDF