According to Evan Blass, Samsung is working on a wide range of carrier-specific firmware Galaxy F, world’s first foldable mobile device. This will allow it to work with U.S. Cellular, Spectrum Mobile, AT&T, Sprint and other US network providers. It is unknown how well Galaxy F will sold in the US, but I guess that if you want a market for an overpriced curio that will possibly begin a revolution in the mobile industry but is doubtful to sell well itself, US is the place to go. Galaxy F may or may not come out on March 2019, and its price may or may not be $1500.