My wife and I will activate our mobile Eurailpass when we land in Frankfurt. We plan to go from FRA to Bern that morning. I know that FRA will have wifi, but my concern is what SIM to buy for use in ITALY (we have wifi in Switzerland at our friend’s home). I would like a SIM card that I can use not only in Italy but in Germany as we will be in Germany for a month. Last year, when I was only in Germany, I used 02, but obviously I want something that will be dependable in Italy. Do you suggest getting one SIM card for Italy and then 02 when I am in Germany?