To apply unlock and verify unlock status. Phones are G955U Model, they may have AT&T logo when powers up but FULLY FACTORY UNLOCKED to work with your GSM simcards. Phones only work with GSM Carriers. The item "NEW Samsung Galaxy S8 Plus SM-G955U 64GB UNLOCKED- USA/T-Mobile/AT&T/Worldwide" is in sale since Wednesday, July 19, 2017.This item is in the category "Cell Phones & Accessories\Cell Phones & Smartphones". The seller is "mccharming" and is located in Oklahoma City, Oklahoma. This item can be shipped worldwide.