Wait untill you get Aldi mobile provider. In my country i pay 10eur a month for unlimited calls+sms and 20gb of data. For 15eur you get same but 50gb data. Simplest cell provider, no hiden costs, and everything is resolved online. They do not have offices where you register. You just but a sim card. And then they can either charge your bank account or you buy vouchers at Aldi registers - printed on the receipt paper. Its cheap and awesome!