Hi there, thank you for asking us your question about the Samsung Galaxy A16. Yes, the advertised unlocked Galaxy A16 (U.S. version) is GSM capable. This device is compatible with the following U.S. carriers: AT&T, Boost Mobile, Cricket, Google Fi, H2O Wireless, Metro by T-Mobile, Mint Mobile, Sprint, T-Mobile, Ting Mobile, Ultra Mobile, US Cellular, and Verizon. If you have additional questions or if you would like further assistance, let us know by contacting Support. Thanks for being a steadfast Samsung customer. - Debra