Samsung Galaxy S21 Ultra Specifications

Key Specs General Performance Display Design Rear Camera Front Camera Battery Storage Network & Connectivity Multimedia Sensors

Key Specs
RAM & Storage 12 GB RAM + 256 GB
16 GB RAM + 512 GB
Processor Samsung Exynos 2100 View Details
Rear Camera 108 MP + 12 MP + 10 MP + 10 MP
Front Camera 40 MP
Battery 5000 mAh
Display 6.8 inches (17.27 cm)

General
Launch Date January 27, 2021 (Official)
Operating System Android v11
Custom UI Samsung One UI

Performance

(Very Good)
Chipset Samsung Exynos 2100 View Details
Processor Octa core (2.9 GHz, Single core, Cortex X1 + 2.8 GHz, Tri core, Cortex A78 + 2.2 GHz, Quad core, Cortex A55)
Architecture 64 bit
Fabrication 5 nm
Graphics (GPU) Mali-G78 MP14
RAM 12 GB / 16 GB
RAM Type LPDDR5
Performance Test Results icon View AnTuTu Score
AnTuTu Score 646,482
Bootup Time 34.0 s
Speed Test (Antutu Score)
The higher, the better
OPPO Find X10 Pro Max 4,214,275 
vivo X300 Ultra 3,977,648 
Samsung Galaxy S26 Ultra 3,905,605 
Apple iPhone 18 Pro Max 3,478,833 
Samsung Galaxy Z Fold 8 3,252,918 
vivo X300 FE 3,000,897 
Samsung Galaxy S21 Ultra 646,482 
*Group: 90-450k Phones
See comparison with other phones
Bootup Time
The lower, the better
Google Pixel 11 Pro XL 9 s
Samsung Galaxy S26 Ultra 11 s
Apple iPhone 18 Pro Max 11 s
Samsung Galaxy Z Fold 8 12 s
vivo X300 FE 14 s
vivo X300 Ultra 14 s
Samsung Galaxy S21 Ultra 34 s
*Group: 90-450k Phones
See comparison with other phones
Gaming Test Results icon
Battery Drain* 8.0 %
Heating* 23.5 %
* after 30 mins of gaming
Battery Drain*
The lower, the better
Apple iPhone 17 Pro Max 3 %
OPPO Find X9 Ultra 4 %
vivo X300 FE 5 %
vivo X300 Ultra 7 %
Samsung Galaxy S26 Ultra 8 %
Samsung Galaxy S21 Ultra 8 %
Google Pixel 10 Pro 11 %
*Group: 90-450k Phones
See comparison with other phones
Heating*
The lower, the better
OPPO Find X9 Ultra 9.1 %
Samsung Galaxy S26 Ultra 14.1 %
vivo X300 FE 17.4 %
vivo X300 Ultra 21.7 %
Samsung Galaxy S21 Ultra 23.5 %
Samsung Galaxy S24 Ultra 24.1 %
Google Pixel 10 Pro 37.9 %
*Group: 90-450k Phones
See comparison with other phones
Benchmark Screenshots
Benchmarks
AnTuTu Benchmark
Benchmarks
Graphics Benchmark
Benchmarks
GeekBench5 Benchmark
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Display

(Excellent)
Display Type Dynamic AMOLED 2x
Screen Size 6.8 inches (17.27 cm)
Resolution 1440x3200 px (QHD+)
Brightness 1500 nits
Refresh Rate 120 Hz
Aspect Ratio 20:9
Pixel Density 516 ppi
Screen to Body Ratio (calculated) 89.44 %
Screen Protection Corning Gorilla Glass Victus
Bezel-less Display Yes with punch-hole display
HDR 10 / HDR+ Support Yes, HDR 10+
UI Screenshots
UI Screenshot
Lock Screen
UI Screenshot
Home Screen
UI Screenshot
Screen With Widgets
UI Screenshot
Dialer Screen
UI Screenshot
App Drawer
UI Screenshot
Notification Panel
UI Screenshot
Quick Settings Panel
UI Screenshot
Settings Screen
UI Screenshot
OS Version
UI Screenshot
Storage
UI Screenshot
Battery
UI Screenshot
Camera On
UI Screenshot
Camera Options
UI Screenshot
Camera Modes
UI Screenshot
Camera Settings
UI Screenshot
Picture Size Options
UI Screenshot
Video Size Options

Design
Height 165.1 mm
Width 75.6 mm
Thickness 8.9 mm
Weight 227 grams
Build Material Back: Gorilla Glass
Water Resistance Yes, Water resistant, IP68, (up to 30 minutes in a depth of 1.5 meter)
Ruggedness Dust proof
Click to View Click to View

Rear Camera

(Excellent)
Resolution
CameraMPLens FeaturesApertureSensor SizeSensor NamePixel SizeZoomFocal Length
Primary108 MPWide Anglef/1.81/1.33" Samsung ISOCELL Plus S5KHM30.8µm26 mm
Secondary12 MPUltra-Wide Anglef/2.21/2.55" 1.4µm13 mm
Tertiary10 MPTelephoto1/3.24" 1.22µmupto 3x Optical Zoom72 mm
Quaternary10 MPf/4.91/3.24" 1.22µmupto 10x Optical Zoom
Autofocus Yes, Phase Detection Autofocus, Laser Autofocus
OIS Yes
Flash Yes, LED Flash
Image Resolution 12000 x 9000 Pixels
Settings Exposure compensation, ISO control
Shooting Modes Continuous Shooting
High Dynamic Range mode (HDR)
Camera Features Digital Zoom
Auto Flash
Face detection
Touch to focus
Video Recording 8k @24 fps
4k @30 fps
Full HD @60 fps
HD @960 fps
Video Recording Features Slow Motion
Video HDR
Bokeh portrait video
Video Pro Mode
Rear Camera Samples
Rear Camera
Wide Angle
Rear Camera
Portrait Shot
Rear Camera
Night Mode OFF
Rear Camera
Night Mode ON
Rear Camera
Close Up
Rear Camera
Low Light
Rear Camera
Low Light With Flash
Rear Camera
Colour Variance
Rear Camera
Daylight Auto / HDR OFF
Rear Camera
Daylight / HDR ON
Rear Camera
AI OFF
Rear Camera
AI ON
Rear Camera
Macro

Front Camera

(Excellent)
Resolution
CameraMPLens FeaturesApertureSensor SizeSensor NamePixel SizeFocal Length
Primary40 MPWide Anglef/2.21/2.8"Samsung S5KGH10.7µm26 mm
Autofocus Yes, Phase Detection Autofocus
Video Recording 4k @30 fps
Full HD @30 fps
Front Camera Samples
Front Camera
Selfie
Front Camera
Selfie Portrait
Front Camera
Selfie Low Light
Front Camera
Selfie Low Light With Flash

Battery

(Very Good)
Capacity 5000 mAh
Battery Type Li-ion
TalkTime Up to 41 Hours(4G)
Quick Charging Yes, 25W Fast Charging
Wireless Charging Yes
Wireless Reverse Charging Yes
Battery Test Results icon
Battery Life (PC Mark) 10h 37m
Charging Time (20% to 100%) 55m 14s
Battery Life (PC Mark)
The higher, the better
Samsung Galaxy Z Fold 8 Ultra 20.8 hrs
vivo X300 FE 16.1 hrs
vivo X300 Ultra 15.2 hrs
Samsung Galaxy S26 Ultra 14.4 hrs
Samsung Galaxy Z Fold 8 13.5 hrs
Apple iPhone 18 Pro Max 13.1 hrs
Samsung Galaxy S21 Ultra 10.6 hrs
*Group: 90-450k Phones
See comparison with other phones
Charging Time (20% to 100%)
The lower, the better
vivo X300 Ultra 0.6 hrs
Samsung Galaxy S26 Ultra 0.6 hrs
vivo X300 FE 0.7 hrs
Samsung Galaxy S21 Ultra 0.9 hrs
Samsung Galaxy Z Fold 8 1.0 hrs
Apple iPhone 18 Pro Max 1.3 hrs
Samsung Galaxy S24 Ultra 2.1 hrs
*Group: 90-450k Phones
See comparison with other phones

Storage
Internal Storage 256 GB / 512 GB
Storage Type UFS 3.1
Expandable Storage No

Network & Connectivity
SIM Slot(s) Dual SIM
SIM Type SIM1: Nano, SIM2: Nano
Network Support 5G, 4G
VoLTE Yes
SIM 1 5G bands, 4G bands
Expand
Bands Features
5G bandsFDD N1 / N3 / N5 / N7 / N8 / N20 / N28 / N66
TDD N38 / N40 / N41 / N77 / N78
4G bandsTD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26)
SIM 2 4G bands
Expand
Bands Features
4G bandsTD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26)
SAR Value Head: 0.77 W/kg, Body: 1.02 W/kg
Wi-Fi Yes, Wi-Fi 6 (802.11 a/b/g/n/ac/ax) 5GHz, MIMO
Wi-Fi Features Wi-Fi Direct, Mobile Hotspot
Bluetooth Yes, v5.2
GPS Yes with A-GPS, Glonass
NFC Yes

Multimedia
Stereo Speakers Yes
Audio Jack USB Type-C

Sensors
Fingerprint Sensor Yes
Fingerprint Sensor Position On-screen
Fingerprint Sensor Type Ultrasonic
Other Sensors Light sensor, Proximity sensor, Accelerometer, Barometer, Compass, Gyroscope
Mobiles› Samsung Galaxy S21 Ultra› Samsung Galaxy S21 Ultra Specifications
Updated on: November 13, 2026