How to calibrate compass on Android

In this video, I'll show you how to fix your compass on your mobile device (Android).
A week ago, I had a problem with the compass on my Samsung Galaxy S4.
It didn't work and showed constantly the wrong direction.
This was very annoying, especially in Google Maps.
So this is how I fixed it.

Download link GPS-Status:
https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2

Видео How to calibrate compass on Android канала RESTOPification