These are the USSD codes for O2 in Germany. These USSD codes are still current but can change. Also note that the APN settings for O2 in Germany has been added elsewhere on this website. The USSD codes are rather unique to O2 and will not work on the USSD Vodafone Germany network. You can search this website for more information on other USSD codes in Europe.
These are the USSD codes for O2 in Germany. With these USSD codes you can check your balance and use other services on the O2 network in Germany. Search this website for more information on this website for more information as well as assistance.