There's a Wiki specifically for that purpose [1]. I had minimal problems buying Fyve (Vodafone MVNO) SIM cards two years ago, activated at the point of purchase

There's a Wiki specifically for that purpose [1]. I had minimal problems buying Fyve (Vodafone MVNO) SIM cards two years ago, activated at the point of purchase if I remember correctly. I had to cut them to Nano SIM size myself though.. [1] http://prepaid-data-sim-card.wikia.com/wiki/Germany http://prepaid-data-sim-card.wikia.com/wiki/Germany