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Firmware G991BXXU4CVB8

Device Galaxy S21 5G

Model SM-G991B

Region ZTO

Country  Brazil

OS Android 12

Release Date 2/16/2022

Upload Date 4/5/2022

PDA G991BXXU4CVB8

CSC G991BOWO4CVB8

Changelist 23695702

Size 7093324598 bytes (approx. 6.6 GB)

ZTO CSC Breakdown

Network ID
NW01299
Network Name
TIM
Network Country
 Brazil
Network Bands
GSM 900 / GSM 1800 / UMTS 850 / UMTS 900 / UMTS 2100 / LTE 700 / LTE 1800 / LTE 2100 / LTE 2600 / 5G 700 / 5G 1800 / 5G 2300 / 5G 2600 / 5G 3500
Network ID
NW00243
Network Name
Claro
Network Country
 Brazil
Network Bands
GSM 900 / GSM 1800 / UMTS 850 / UMTS 2100 / LTE 700 / LTE 1800 / LTE 2600 / 5G 2300 / 5G 2600 / 5G 3500
Network ID
NW01465
Network Name
VIVO
Network Country
 Brazil
Network Bands
GSM 850 / GSM 1800 / UMTS 850 / UMTS 2100 / LTE 700 / LTE 1800 / LTE 2600 / 5G 700 / 5G 1800 / 5G 2300 / 5G 2600 / 5G 3500
Network ID
NW00901
Network Name
Oi
Network Country
 Brazil
Network Bands
GSM 1800 / UMTS 2100
Network ID
NW01087
Network Name
Sercomtel
Network Country
 Brazil
Network Bands
GSM 900 / GSM 1800 / UMTS 850
Network ID
NW00327
Network Name
CTBC
Network Country
 Brazil
Network Bands
GSM 900 / GSM 1800 / UMTS 2100 / LTE 700 / LTE 1800 / 5G 2300
Network ID
NW00855
Network Name
Nextel
Network Country
 Brazil
Network Bands
UMTS 2100 / LTE 1800 / LTE 2100
Network ID
NW01017
Network Name
Porto Conecta
Network Country
 Brazil
Network Bands
MVNO
Network ID
NW01587
Network Name
Surf Telecom
Network Country
 Brazil
Network Bands
MVNO