1. You can use different Local Carriers 2. Works in Greece. Please check the supported bands with your carriers. 4G BANDS 4G FDD-LTE: B1(2100),B2(1900),B3(1800),B4(AWS),B5(850),B7(2600),B8(900),B12(700),B13(700), B18(800),B19(800),B20(800),B25(1900),B26(850),B28(700) / 4G TDD-LTE: B34(2010),B38(2600),B39(1900),B40(2300),B41(2500) 5G BANDS 5G Sub-6 FDD: N1(2100) / 5G Sub-6 TDD: N78(3500),N79(4500)