Howdy Joe, thanks for asking 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. wireless carriers: AT&T, Boost Mobile, Cricket, Google Fi, H2O Wireless, Mint Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, and Verizon. We suggest reaching out to the compatible carrier of your choosing to inquire if this device could be activated in Mexico. If you think of additional questions or us or if you would like any further assistance, please do not hesitate to contact Support. Thanks for being a loyal Samsung customer. - Debra