The whole point is that when you're in Germany, the costs are the same ans when you are in France. Eg if your plan includes X free minutes to French numbers, an

The whole point is that when you're in Germany, the costs are the same ans when you are in France. Eg if your plan includes X free minutes to French numbers, and X€/minutes to call German numbers, when you're in Germany, you still call free your friends at home, and you still pay when you call German numbers.