When moving to Poland, you will need a SIM card and a reliable Internet connection. These are the main providers of mobile networks in Poland: T-Mobile, Orange Polska, Play, Plus. Take your time to enquire about their services and relating rates beforehand. You can choose between prepaid and postpaid options. Note that you will have to sign a contract with the service provider for a minimum of one year in case of the postpaid plan. You can do it at every service provider’s point of sale. In general, your identity card or passport will be required.