Hi, I would like to ask if it's possible to buy Sim card in Frankfurt airport? My flight arrives at 6 am and my train leaves at 8am to Konstanz, Germany. Tks so much
There will for sure be shops selling SIM cards, but I don't know whether they sell something that fits your needs for Switzerland. In general it's convenient to try to arrange for a card before you depart, so that you're connected straight upon arrival. You'll find some options here: myswissalps.com/ simcard.
Tks so much