How to create QR code to connect to WiFi from a CENTRIC

If you have ever wished that there was an easier method to connect your CENTRIC, device to a Wi-Fi network, since version 10 of Android the process has been greatly simplified allowing you to share the password and wireless network configuration simply by reading a QR code from a CENTRIC mobile device or any other brand.
Search for your device among the catalog of CENTRIC devices compatible with this feature and consult the step-by-step instructions.

CENTRIC G3 CENTRIC G3
CENTRIC G5 CENTRIC G5
CENTRIC S1 CENTRIC S1
CENTRIC A2 CENTRIC A2