Good day AD, thanks for taking the time to ask us your question about the Samsung Galaxy S25 Ultra. The advertised unlocked Galaxy S25 Ultra is the U.S. version of this device. It is compatible with the following U.S. carriers: AT&T, Boost Mobile, Cricket, Google Fi, H2O Wireless, Mint Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, Verizon, and Visible. It works well with the following networks: 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 contact a compatible carrier to inquire if this device would be functional while in India. Thanks for choosing Samsung! - Debra