Unity OnApplicationQuit() call when closing app

I dont think onaplicationquit ever gets called.

Onapplicationpaused is called but not in all cases (like the user just taking the headset off, although perhaps after 10 seconds it may be, by which time they may have turned the device off).

You can check in update to see if the user is still wearing the headset and if theyre not then take action in case they end up quitting. Do the same for the pause state and you should be covered for all scenarios of users quitting your application.

Just honouring onapplicationquit would have been much easier and more intuitive of course.

I don't see the OnApplicationQuit call... I myself does

if (Menu.bQuit) //indication in my own code that we should quit
{
#if UNITY_EDITOR
    //Application.Quit() does not work in the editor so
    // this need to be set to false to end the game
    UnityEditor.EditorApplication.isPlaying = false;
#else
    UnityEngine.Application.Quit();
#endif
}