Samsung Galaxy S21 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), 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 Serbia

2G B3 (1800)B8 (900)
3G B1 (2100)B8 (900)
4G B3 (1800)B20 (800)
5G No

Operators of Serbia

2G 3G 4G 5G
MTS B3 (1800)B8 (900) B1 (2100)B8 (900) B3 (1800)B20 (800) No
Vip B3 (1800)B8 (900) B1 (2100) B3 (1800)B20 (800) No
Telenor B8 (900) B1 (2100)B8 (900) B3 (1800)B20 (800) No