@Michael: That is not true. This is the universal unlocked version of the S8. It will work on all networks. From the item description:
Compatible with all major U.S. carriers, including Verizon, AT&T, Sprint and T-Mobile. Also compatible with prepaid carriers including Cricket Wireless, Boost Mobile, MetroPCS, Simple Mobile, Total Wireless, Tracfone, Net10, Mint, and H2O."