Hey there Kitty, thank you for taking the time to ask us your questions about the Samsung Galaxy S26 Ultra. The advertised Galaxy S26 Ultra (Model: SM-S948UZKFXAA) is an unlocked, universal device that natively supports both CDMA and GSM technologies. However, keep in mind that legacy CDMA networks in the U.S. (like Verizon and Sprint) have been shut down. Regardless of the older network technology, this model is universally compatible with all major GSM and 5G networks like AT&T, Boost Mobile, Cricket, Google Fi, H2O Wireless, Mint Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, Verizon, and Visible. If you have additional questions for us or if you would like further assistance, please feel free to contact Support. Thanks for choosing Samsung! - Debra