Hello Lorela, thanks for asking us your question about the Samsung Galaxy S26 Ultra. The advertised unlocked Galaxy S26 Ultra is the U.S. version of this device. It is compatible with the following U.S. wireless carriers: AT&T, Boost Mobile, Cricket, Google Fi, H2O Wireless, Mint Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, Verizon, and Visible. This device works well with the following Network/Bearer (S/W Enabled): 2G GSM - GSM850, GSM900, DCS1800, PCS1900; 3G UMTS - B1(2100), B2(1900), B4(AWS), B5(850), B8(900); 4G FDD LTE - B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B13(700), B14(700), B18(800), B19(800), B20(800), B25(1900), B26(850), B28(700), B29(700), B30(2300), B66(AWS-3), B71(600); 4G TDD LTE - B38(2600), B39(1900), B40(2300), B41(2500), B48(3600); 5G FDD Sub6 - N1(2100), N2(1900), N3(1800), N5(850), N7(2600), N8(900), N12(700), N20(800), N25(1900), N28(700), N66(AWS-3), N71(600); 5G TDD Sub6 - N38(2600), N41(2500), N77(3700), N78(3500); 5G TDD mmWave - N257(28GHz), N258(26GHz), N260(39GHz), N261(28GHz). If you have any other questions for us or if you would like any further assistance, please do not hesitate to contact Support. Thank you for being a faithful Samsung customer. - Debra