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Home / Firmware / SM-G991B / XXV

Firmware G991BXXSFHYE1

Device Galaxy S21 5G

Model SM-G991B

Region XXV

Country VIETNAM

OS Android 15

Release Date 5/21/2025

Upload Date 5/27/2025

PDA G991BXXSFHYE1

CSC G991BOXMFHYE1

Changelist 30959686

Size 9061564048 bytes (approx. 8.4 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

NW02262

Network Name

iTel

Network Country

Vietnam

Network Bands

WiMAX

Network ID

NW02343

Network Name

VNSKY

Network Country

Vietnam

Network Bands

CDMA2000 450

Network ID

NW01431

Network Name

VIETTEL

Network Country

Vietnam

Network Bands

GSM 900 / UMTS 2100 / LTE 1800 / LTE 2100

Samsung Galaxy S21 5G (SM-G991B) Android 15 Firmware (G991BXXSFHYE1) – VIETNAM | SamFrew