Originally Posted by
caspritz78
Blauworld is the cheapest Provider for making international calls from your cellphone. You can either buy the SIM-Card at cetrain stores or order it online. Don't know if they ship to addresses outside Germany.
You can buy blauworld SIM cards in real, Saturn, and some other stores.
While blauworld does offer the best international calling rates, I prefer to use a German local access number to make international calls from other SIMs. It adds a step, but it is cheaper that way (depending of course on overall usage).