Home / Firmware / SM-G991B / XXV

Firmware G991BXXU4CVD2

Device Galaxy S21 5G

Model SM-G991B

Region XXV

Country VIETNAM

OS Android 12

Release Date 4/4/2022

Upload Date 4/19/2022

PDA G991BXXU4CVD2

CSC G991BOXM4CVD2

Changelist 23695702

Size 7854028528 bytes (approx. 7.3 GB)

XXV CSC Breakdown

Network ID

NW00539

Network Name

Gmobile

Network Country

Vietnam

Network Bands

GSM 1800

Network ID

NW01450

Network Name

VN MobiFone

Network Country

Vietnam

Network Bands

GSM 900 / GSM 1800 / UMTS 2100

Network ID

NW02010

Network Name

reddi

Network Country

Vietnam

Network Bands

MVNO

Network ID

NW01471

Network Name

VN VINAPHONE

Network Country

Vietnam

Network Bands

GSM 900 / GSM 1800 / UMTS 900 / UMTS 2100 / LTE 1800

Network ID

NW01470

Network Name

VN Vietnamobile

Network Country

Vietnam

Network Bands

GSM 900 / UMTS 2100

Network ID

NW00497

Network Name

EVNTelecom 3G

Network Country

Vietnam

Network Bands

WiMAX

Network ID

NW01431

Network Name

VIETTEL

Network Country

Vietnam

Network Bands

GSM 900 / UMTS 2100 / LTE 1800 / LTE 2100