Unhappily I could not put a comment under an answer of What's the difference between isDeviceLocked and isKeyguardSecure in android's KeyguardManager?, but how so often I don't find a answer to my questions and have then dig through codesearch.
So back to the question:
What is the difference between:
((KeyguardManager)getSystemService(Context.KEYGUARD_MANAGER).isDeviceLocked()
and
((KeyguardManager)getSystemService(Context.KEYGUARD_MANAGER).isKeyguardLocked()
?
My target was to figure out if the device is in use or locked.