Select Lock screen. Tap Secure lock settings. Confirm your identity by entering your phone's unlock pattern, PIN, or password. Turn on the Show Lockdown option.

If you’re annoyed by the number of times you’ve to unlock your Android phone at home or when it's on you, Smart Lock is probably what you’re looking for.

Pattern Unlock sets Android apart from Apple’s iOS and is, perhaps, the chief reason why Google wanted a patent for such technology.