Debug.Log in android

Dear all,
Were Unity-made application puts the log files when it runs under Android?
I use both:
(1) Debug.Log("user message");
(2) using (StreamWriter msglog = File.AppendText(msglogfilepath)) { msglog.Write((DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds + "user message \r\n"); }
And I can't found both, log and user files.

I develop in Unity for Gear Occulus and Samsung S8.
Any clues?
Kind regards, Artem.

 

You get that debug output on Android via the adb logcat command (on your desktop computer).