INTERNATIONAL CALLS: To call abroad from Poland, dial 00 (the international access code), then the country code and telephone number. To call Poland from abroad, dial the international access code 00, then the country code 48, and the relevant city code minus the initial 0. (To call a phone in Warsaw call: 0048 22 1234567. In the US you generally need to dial "1" before calling Europe. To call a Polish mobile phone from abroad dial 00 48, and the mobile phone number without the initial 0.