Where is the best place (store) to purchase a sim card for my unlocked global phone at either the Frankfurt airport or main train station?
Are there any stores which are not selling SIM cards nowadays? To find prepaid SIM cards for cheap calls inside Germany is no problem. If it comes to cards which offer also affordable rates for calls abroad the choice becomes very limited. E.g. http://www.blauworld.de/ Can be e.g. bought at the ReiseBank (literally: travel bank) branches you can find at the airport and the main train station.
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