Hello Mark, thank you for taking the time to ask us your question about the Samsung Galaxy S26. The advertised unlocked Galaxy S26 is the U.S. version of this device. It is compatible with the following wireless carriers: AT&T, Boost Mobile, Cricket, Google Fi, H2O Wireless, Mint Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, Verizon, and Visible. Please feel free to reach out to a compatible carrier to inquire if this device would be functional while in Europe. If you would like further assistance, please let us know by contacting Support. Thank you for being a cherished Samsung customer. - Debra