Samsung Galaxy S21 Ultra 5G G998U1 S21U 6.8 ROM 256GB NFC Android Cell Phone September 9, 2023samsung256gb, android, cell, g998u1, galaxy, phone, s21u, samsung, ultraadmin Versions: SM-G998B, SM-G998B/DS (International); SM-G998U (USA); SM-G998U1 (USA unlocked); SM-G998W (Canada); SM-G998N (Korea); SM-G9980 (China).