Was looking for a German prepaid SIM card for my iPhone in the Frankfurt Hauptbahnhof (hbf) train…read morestation. Found this place in the lower level of the station. Got a Blau card for 10 euros that had 1 Gig of data and 30 min of time, which is exactly what I was looking for. This was the best price we found throughout Germany and they installed and helped get it working with a smile. English speaking staff. Highly recommended.