Carrier billing for Windows Phone comes to O2 Germany

o2-zahlen reports that carrier billing has now been enabled for Windows Phone 7 and 8 handsets on O2 Germany.

The service only needs a O2 SIM card installed, and works even with Pay as You Go SIMs.

Carrier billing provides a way for users without credit cards to purchase apps and media, and in general increase sales to developers by 50%.