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Firmware W2021ZCU2BUD7

Device 三星W21 5G

Model SM-W2021

Region CHC

Country  China

OS Android 11

Release Date 4/15/2021

Upload Date 4/26/2021

PDA W2021ZCU2BUD7

CSC W2021CHC2BUD7

Changelist 21455571

Size 7216124944 bytes (approx. 6.7 GB)

CHC CSC Breakdown

Network ID
NW00109
Network Name
中国移动
Network Country
 China
Network Bands
GSM 900 / GSM 1800 / TD-SCDMA 1900 / TD-SCDMA 2000 / TD-LTE 1900 / TD-LTE 2300 / TD-LTE 2500 / 5G 700 / 5G 2500
Network ID
NW00041
Network Name
中国电信
Network Country
 China
Network Bands
CDMA2000 800
Network ID
NW01665
Network Name
CTMACAO
Network Country
 Macau (People's Republic of China)
Network Bands
CDMA 800
Network ID
NW01933
Network Name
CTMACAO Roaming
Network Country
 Macau (People's Republic of China)
Network Bands
CDMA 800
Network ID
NW00042
Network Name
中国联通
Network Country
 China
Network Bands
GSM 900 / GSM 1800 / UMTS 900 / UMTS 2100 / LTE 1800 / LTE 2100 / TD-LTE 2300 / TD-LTE 2500 / 5G 2100 / 5G 3500
Network ID
NW01378
Network Name
UNICOM HK
Network Country
 Hong Kong
Network Bands
MVNO
Network ID
NW01910
Network Name
HKW
Network Country
 Hong Kong
Network Bands
MVNO
Network ID
NW01911
Network Name
CUHK IOT
Network Country
 Hong Kong
Network Bands
MVNO