Hmmm. We can use this instead Call, but i think that display on/off is less important (for me at least ) then Call active/none and if installation process running or not.. Ones happens to me when i installed something and auto-background changer cause to stop it
But i don't know how to check if phone install something now.
Also i prefer checking command without mcetools package, but don't know how

PS. Yep, display can be off when phone in call mode..