Howdy Scott, thank you for asking us your question about the Samsung Galaxy S25. The advertised unlocked Galaxy S25 works well with 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), N5(850), N7(2600), N25(1900), N28(700), N66(AWS-3), N71(600); 5G TDD Sub6
N41(2500), N77(3700), N78(3500); 5G TDD mmWave - N257(28GHz), N258(26GHz), N260(39GHz), N261(28GHz). Please feel free to reach out to Support if you have any other questions for us. Thank you for being a staunch Samsung customer. - Debra