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Samsung Galaxy S21 SM-G991U1 specifications Expand
Released 2021, January 29
169g (Sub6), 171g (mmWave), 7.9mm thickness
Android 11, One UI 3.1
128GB/256GB storage, no card slot

Samsung Galaxy S21 was announced at 2021, January 14 with Android 11, One UI 3.1, have chipset Exynos 2100 (5 nm) - International,Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International,Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680) - USA/China and GPU Mali-G78 MP14 - International,Adreno 660 - USA/China. It have 128GB 8GB RAM, 256GB 8GB RAM storage and there are colors: Phantom Gray, Phantom White, Phantom Violet, Phantom Pink

NETWORK
Technology
GSM / CDMA / HSPA / EVDO / LTE / 5G
2G
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only)
3G
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G991U1
5G
2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G991U1
Speed
HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G
TIMELINE
Announced
2021, January 14
Released
Released 2021, January 29
BODY
Dimensions
151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
Weight
169 g (Sub6), 171 g (mmWave) (5.96 oz)
Build
Glass front (Gorilla Glass Victus), plastic back, aluminum frame
SIM
Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
DISPLAY
Type
Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
Size
6.2 inches, 94.1 cm2 (~87.2% screen-to-body ratio)
Resolution
1080 x 2400 pixels, 20:9 ratio (~421 ppi density)
Protection
Corning Gorilla Glass Victus
Always-on display
PLATFORM
OS
Android 11, One UI 3.1
Chipset
Exynos 2100 (5 nm) - International
Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
CPU
Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680) - USA/China
GPU
Mali-G78 MP14 - International
Adreno 660 - USA/China
MEMORY
Card slot
No
Internal
128GB 8GB RAM, 256GB 8GB RAM
UFS 3.1
MAIN CAMERA
Camera
12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, Dual Pixel PDAF, OIS
64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom
12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video
Features
LED flash, auto-HDR, panorama
Video
8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS
FRONT CAMERA
Camera
10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, Dual Pixel PDAF
Features
Dual video call, Auto-HDR
Video
4K@30/60fps, 1080p@30fps
SOUND
Loudspeaker
Yes, with stereo speakers
3.5mm jack
No
32-bit/384kHz audio
Tuned by AKG
COMMUNICATES
WLAN
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot
Bluetooth
5.0, A2DP, LE
GPS
Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC
Yes
Radio
FM radio (Snapdragon model only; market/operator dependent)
USB
USB Type-C 3.2, USB On-The-Go
FEATURES
Sensors
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Samsung DeX, Samsung Wireless DeX (desktop experience support)
Bixby natural language commands and dictation
Samsung Pay (Visa, MasterCard certified)
BATTERY
Battery
Li-Ion 4000 mAh, non-removable
Charging
Fast charging 25W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging 15W
Reverse wireless charging 4.5W
MISC
Colors
Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
SAR US
0.74 W/kg (head)     1.08 W/kg (body)    
SAR EU
0.46 W/kg (head)     1.51 W/kg (body)    
Performance
AnTuTu: 584055 (v8)
GeekBench: 3238 (v5.1)
GFXBench: 60fps (ES 3.1 onscreen)
Buy on Amazon

Specs source: gsmarena.com
Disclaimer. We can not guarantee that the information on this page is 100% correct

Filter firmware

Samsung firmware SM-G991U1 / Galaxy S21 SM-G991U1 31

Device CSC Version Bit/SW REV. Security Patch Lvl. OS Build date
Samsung Galaxy S21 PCT G991U1UESDGXJ3 D  Full Files U(Android 14) 20241016041140
Samsung Galaxy S21 PCT G991U1UEUCGXG6 C  2024-08-01  Full Files U(Android 14) 20240810041040
Samsung Galaxy S21 PCT G991U1UESCGXF3 C  2024-07-01  Full Files U(Android 14) 20240626050120
Samsung Galaxy S21 PCT G991U1UESBGXE2 B  2024-05-01  Full Files U(Android 14) 20240516050020
Samsung Galaxy S21 PCT G991U1UEUAGXDE A  2024-04-01  Full Files U(Android 14) 20240501032710
Samsung Galaxy S21 PCT G991U1UESAFXB3 A  2024-02-01  Full Files U(Android 14) 20240220210341
Samsung Galaxy S21 PCT G991U1UEU9FWL3 9  2023-12-01  Full Files U(Android 14) 20240110233551
Samsung Galaxy S21 PCT G991U1UES9EWK2 9  2023-11-01  Full Files T(Android 13) 20231207053300
Samsung Galaxy S21 PCT G991U1UES9EWI3 9  2023-10-01  Full Files T(Android 13) 20231007054401
Samsung Galaxy S21 PCT G991U1UEU9EWI2 9  2023-09-01  Full Files T(Android 13) 20230928065100
Samsung Galaxy S21 PCT G991U1UES8EWH2 8  2023-08-01  Full Files T(Android 13) 20230815020911
Samsung Galaxy S21 PCT G991U1UEU8EWF6 8  2023-06-01  Full Files T(Android 13) 20230714212610
Samsung Galaxy S21 PCT G991U1UES7EWE3 7  2023-05-01  Full Files T(Android 13) 20230608064241
Samsung Galaxy S21 PCT G991U1UEU6EWD4 6  2023-04-01  Full Files T(Android 13) 20230516221911
Samsung Galaxy S21 PCT G991U1UES5DWB2 5  2023-02-01  Full Files T(Android 13) 20230208001141
Samsung Galaxy S21 PCT G991U1UES5DWA4 5  2023-01-01  Full Files T(Android 13) 20230128032640
Samsung Galaxy S21 PCT G991U1UES5CVLA 5  2022-11-01  Full Files S(Android 12) 20230113025411
Samsung Galaxy S21 PCT G991U1UEU5DVL1 5  2022-11-01  Full Files T(Android 13) 20230126054340
Samsung Galaxy S21 PCT G991U1UES5CVIH 5  2022-10-01  Full Files S(Android 12) 20221110224810
Samsung Galaxy S21 PCT G991U1UEU5CVGB 5  2022-08-01  Full Files S(Android 12) 20220819012530
Samsung Galaxy S21 PCT G991U1UEU5CVF1 5  2022-06-01  Full Files S(Android 12) 20220611070001
Samsung Galaxy S21 PCT G991U1UES5CVCB 5  2022-04-01  Full Files S(Android 12) 20220524021511
Samsung Galaxy S21 PCT G991U1UEU5CVC4 5  2022-03-01  Full Files S(Android 12) 20220324065130
Samsung Galaxy S21 PCT G991U1UEU5BULH 5  2022-01-01  Full Files S(Android 12) 20220201030850
Samsung Galaxy S21 PCT G991U1UEU4AUI7 4  2021-09-01  Full Files R(Android 11) 20211007140438
Samsung Galaxy S21 PCT G991U1UEU4AUGQ 4  2021-08-01  Full Files R(Android 11) 20210824120805
Samsung Galaxy S21 PCT G991U1UEU4AUF5 4  2021-06-01  Full Files R(Android 11) 20210615112010
Samsung Galaxy S21 PCT G991U1UEU3AUDD 3  2021-05-01  Full Files R(Android 11) 20210511154508
Samsung Galaxy S21 PCT G991U1UEU2AUB6 2  2021-03-01  Full Files R(Android 11) 20210324192806
Samsung Galaxy S21 PCT G991U1UEU1AUAG 1  2021-02-01  Full Files R(Android 11) 20210202124209
Samsung Galaxy S21 PCT G991U1UEU1AUA3 1  2021-01-01  Full Files R(Android 11) 20210106194004
Lastest combinations SM-G991U1 / Galaxy S21 SM-G991U1

We are working hard to figure it out

You can request or contribute combination for this model to Telegram group

 How to flash Samsung SM-G991U1 / Galaxy S21 SM-G991U1 firmware

1. Extract (unzip) the Samsung firmware file. Recommended using WinRAR or 7-Zip

2. Download Odin Tool 3.13.1

3. Extract Odin ZIP file

4. Open Odin execute file

5. Reboot Samsung phone in Download Mode (hold Home + Power + Volume Down buttons / hold Volume Down + Bixby buttons then plug-in cable)

6. Connect you Samsung phone and wait until you get a blue sign in Odin

7. Add the 1 file Samsung firmware to AP/PDA or 4 files Samsung firmware (AP/BL/CP/CSC) to it's slots

8. Make sure re-partition is NOT ticked

9. Click the START button, sit back and wait few minutes

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