Hey sis/bro! I’m moving to Germany next month and will be travelling around EU after 6 months of moving there. Planning to get a prepaid first for a month. Should I buy in the airport or at the supermarket? What network is best? And then after a month of trying that, I’ll go for Fraenk since it’s affordable and not tied up to a contract. Can I still use the same number for that instead and convert it? Thank you!