Samsung Galaxy S21 Ultra 5G Bands

2G B2 (1900), B3 (1800), B5 (850), B8 (900)
3G B1 (2100), B2 (1900), B4 (1700/2100), B5 (850), B8 (900)
4G B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100), B5 (850), B7 (2600), B8 (900), B12 (700), B13 (700), B14 (700), B18 (800), B19 (800), B20 (800), B25 (1900), B26 (850), B28 (700), B29 (700), B30 (2300), B34 (2000), B38 (2600), B39 (1900), B40 (2300), B41 (2500), B46 (5200), B48 (3800), B66 (1700/2100), B71 (600)
5G N1 (2100), N2 (1900), N3 (1800), N5 (850), N7 (2600), N8 (900), N28 (700), N40 (2300), N41 (2500), N66 (1700), N71 (600), N77 (3700), N78 (3500), N79 (4700), N260 (39GHz), N261 (28GHz)

Coverage in Philippines

2G B3 (1800)B8 (900)
3G B1 (2100)B5 (850)B8 (900)
4G B1 (2100)B3 (1800)B5 (850)B7 (2600)B28 (700)B40 (2300)B41 (2500)
5G N78 (3500)

Operators of Philippines

2G 3G 4G 5G
Globe B3 (1800)B8 (900) B1 (2100)B8 (900) B3 (1800)B7 (2600)B28 (700)B40 (2300)B41 (2500) No
Smart B3 (1800)B8 (900) B1 (2100)B5 (850) B1 (2100)B3 (1800)B5 (850)B28 (700) N78 (3500)