Samsung Galaxy S21 256GB Specs - Know Full Specifications and Features

Samsung Galaxy S21 256GB Specifications

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

Key Specs

RAM	8 GB
Processor	Samsung Exynos 2100
Rear Camera	12 MP + 64 MP + 12 MP
Front Camera	10 MP
Battery	4000 mAh
Display	6.2 inches (15.75 cm)

General

Operating System	Android v11
Custom UI	Samsung One UI

Performance

(Excellent)

Chipset	Samsung Exynos 2100
CPU	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	Mali-G78 MP14
RAM	8 GB
RAM Type	LPDDR5

Performance Test Results icon

AnTuTu Score	639,170
Bootup Time	18.0 s

Speed Test (Antutu Score)

The higher, the better

Average performance

Best 2,073,660

Group* Average 794,005

This Phone 639,170

Worst 116,374

*Group: 35-200k Phones

See comparision with other phones

Test Comparision

Performance Test Results icon

Speed Test (Antutu Score)

Average performance

The higher, the better

iQOO 12 5G 2,073,660

iQOO Neo 9 Pro 1,611,015

vivo V30 Pro 948,361

Motorola Edge 50 Pro 5G 827,231

Samsung Galaxy A55 5G 733,093

Samsung Galaxy S21 256GB 639,170

Samsung Galaxy S10e 256GB 116,374

*Group: 35-200k Phones

Bootup Time

Average bootup time

The lower, the better

Apple iPhone SE 2022 128GB 9.0 s

Samsung Galaxy S21 256GB 18.0 s

Motorola Edge 50 Pro 5G 18.0 s

iQOO Neo 9 Pro 20.0 s

Samsung Galaxy A55 5G 23.0 s

vivo V30 Pro 25.0 s

Samsung Galaxy S21 Ultra 34.0 s

*Group: 35-200k Phones

Bootup Time

The lower, the better

Average bootup time

Best 9.0 s

This Phone 18.0 s

Group* Average 19.1 s

Worst 34.0 s

*Group: 35-200k Phones

See comparision with other phones

Gaming Test Results icon

GFX Score	6,506.0
Battery Drain	9.0 %
Heating	19.5 %

* after 30 mins of gaming

GFX Score

The higher, the better

Good graphics performance

Best 8,861.0

This Phone 6,506.0

Group* Average 4,991.9

Worst 1,983.0

*Group: 35-200k Phones

See comparision with other phones

Test Comparision

Gaming Test Results icon

* after 30 mins of gaming

GFX Score

Good graphics performance

The higher, the better

Asus ROG Phone 6 8,861.0

iQOO Neo 9 Pro 7,442.0

Samsung Galaxy S21 256GB 6,506.0

Samsung Galaxy A55 5G 5,241.0

vivo V30 Pro 4,819.0

Motorola Edge 50 Pro 5G 3,705.0

Samsung Galaxy A72 1,983.0

*Group: 35-200k Phones

Battery Drain

Average battery backup while gaming

The lower, the better

Asus ROG Phone 2 1.0 %

vivo V30 Pro 5.0 %

Samsung Galaxy A55 5G 6.0 %

Samsung Galaxy S21 256GB 9.0 %

Motorola Edge 50 Pro 5G 9.0 %

Xiaomi 14 Ultra 9.0 %

OnePlus 7T Pro McLaren Edition 17.0 %

*Group: 35-200k Phones

Heating

Normal heating while gaming

The lower, the better

Samsung Galaxy S23 FE 5G 2.5 %

Samsung Galaxy S21 256GB 19.5 %

Motorola Edge 50 Pro 5G 21.1 %

Samsung Galaxy A55 5G 22.9 %

vivo V30 Pro 28.5 %

Xiaomi 14 Ultra 41.3 %

vivo V23 5G 256GB 49.5 %

*Group: 35-200k Phones

Battery Drain

The lower, the better

Average battery backup while gaming

Best 1.0 %

Group* Average 6.2 %

This Phone 9.0 %

Worst 17.0 %

*Group: 35-200k Phones

See comparision with other phones

Heating

The lower, the better

Normal heating while gaming

Best 2.5 %

This Phone 19.5 %

Group* Average 21.4 %

Worst 49.5 %

*Group: 35-200k Phones

See comparision with other phones

Benchmark Screenshots

AnTuTu Benchmark

Graphics Benchmark

Geekbench5 Benchmark

Featured

Samsung Galaxy S21 Plus

₹ 49,000

Go To Store

Display

(Very Good)

Display Type	Dynamic AMOLED 2x
Screen Size	6.2 inches (15.75 cm)
Resolution	1080x2400 px (FHD+)
Aspect Ratio	20:9
Pixel Density	424 ppi
Screen to Body Ratio (calculated)	85.92 %
Screen Protection	Corning Gorilla Glass, Glass Victus
Bezel-less display	Yes with punch-hole display
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch
Brightness	1300 nits
HDR 10 / HDR+ support	Yes, HDR 10+
Refresh Rate	120 Hz
Screen Size	6.2 inches (15.75 cm)
Pixel Density	424 ppi
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch
Refresh Rate	120 Hz

UI Screenshots

Lock Screen

Home Screen

Screen With Widgets

Dialer Screen

App Drawer

Notification Panel

Quick Settings Panel

Settings Screen

OS Version

Storage

Battery

Camera On

Camera Options

Camera Modes

Camera Settings

Picture Size Options

Video Size Options

Design

Height	151.7 mm
Width	71.2 mm
Thickness	7.9 mm
Weight	169 grams
Build Material	Back: Plastic
Colours	Phantom Gray, Phantom Violet, Phantom White
Waterproof	Yes, Water resistant (up to 30 minutes in a depth of 1.5 meter), IP68
Ruggedness	Dust proof

360° View

Click to View

Rear Camera

(Excellent)

Camera Setup

Triple

Resolution

Camera	MP	Aperture	Lens Features	Focal Length	Sensor Size	Pixel Size	Zoom
Primary	12 MP	f/1.8	Wide Angle	26 mm	1.7"	1.8µm
Secondary	64 MP	f/2.0	Telephoto	28 mm	1.7"	0.8µm	upto 30x Digital Zoom, upto 1.1x Optical Zoom
Tertiary	12 MP	f/2.2	Ultra-Wide Angle	13 mm	2.55"	1.4µm

Autofocus

Yes, Phase Detection autofocus, Dual Pixel autofocus

OIS

Yes

Flash

Yes, LED Flash

Image Resolution

4000 x 3000 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

7680x4320 @ 24 fps
3840x2160 @ 30 fps
1920x1080 @ 60 fps
1280x720 @ 960 fps

Video Recording Features

Slo-motion
Bokeh portrait video
Video Pro Mode
Stereo recording

Rear Camera Samples

Daylight Auto / HDR OFF

Daylight / HDR ON

Wide Angle

Portrait Shot

AI OFF

AI ON

Night Mode OFF

Night Mode ON

Close Up

Macro

Low Light

Low Light With Flash

Colour Variance

Compare Camera Samples

Samsung Galaxy S21 256GB 12 MP

Samsung Galaxy S21 Plus 256GB 12 MP

Daylight Auto / HDR OFF

Daylight / HDR ON

Wide Angle

Portrait Shot

AI OFF

AI ON

Night Mode OFF

Night Mode ON

Close Up

Macro

Low Light

Low Light With Flash

Selfie

Selfie Portrait

Selfie Low Light

Selfie Low Light With Flash

Colour Variance

Front Camera

(Good)

Camera Setup

Single

Resolution

Camera	MP	Aperture	Lens Features	Focal Length	Sensor Size	Pixel Size
Primary	10 MP	f/2.2	Wide Angle	26 mm	3.2"	1.22µm

Autofocus

Yes, Phase Detection autofocus

Video Recording

3840x2160 @ 30 fps

Front Camera Samples

Selfie

Selfie Portrait

Selfie Low Light

Selfie Low Light With Flash

Battery

(Good)

Capacity	4000 mAh
Type	Li-ion
Removable	No
TalkTime	Up to 33 Hours(4G)
Wireless Charging	Yes
Quick Charging	Yes, Fast, 25W
USB Type-C	Yes

Battery Test Results icon

Battery Life (PC Mark)	8h 22m
Charging Time (20% to 100%)	1h 0m 47s

Battery Life (PC Mark)

The higher, the better

Below average battery backup

Best 22.4 hrs

Group* Average 13.2 hrs

This Phone 8.4 hrs

Worst 6.7 hrs

*Group: 35-200k Phones

See comparision with other phones

Test Comparision

Battery Test Results icon

Battery Life (PC Mark)

Below average battery backup

The higher, the better

Xiaomi Mi 10T Pro 22.4 hrs

Xiaomi 14 15.8 hrs

Xiaomi 14 Ultra 14.8 hrs

Samsung Galaxy A55 5G 13.1 hrs

Motorola Edge 50 Pro 5G 12.5 hrs

Samsung Galaxy S21 256GB 8.4 hrs

OnePlus 7T Pro McLaren Edition 6.7 hrs

*Group: 35-200k Phones

Charging Time (20% to 100%)

Average charging time

The lower, the better

iQOO 9 0.2 hrs

iQOO Neo 9 Pro 0.3 hrs

vivo V30 Pro 0.8 hrs

Xiaomi 14 Ultra 0.9 hrs

Samsung Galaxy S21 256GB 1.0 hrs

Samsung Galaxy A55 5G 1.2 hrs

OPPO Find N3 Flip 2.5 hrs

*Group: 35-200k Phones

Charging Time (20% to 100%)

The lower, the better

Average charging time

Best 0.2 hrs

This Phone 1.0 hrs

Group* Average 1.1 hrs

Worst 2.5 hrs

*Group: 35-200k Phones

See comparision with other phones

Storage

(Best In Class)

Internal Memory	256 GB
Expandable Memory	No
USB OTG	Yes
Storage Type	UFS 3.1

Network & Connectivity

SIM Slot(s)

Dual SIM, GSM+GSM

SIM Size

SIM1: Nano, SIM2: Nano

Network Support

5G Supported in India, 4G Supported in India, 3G, 2G

VoLTE

Yes

SIM 1

5G bands, 4G bands, 3G bands, 2G bands, GPRS, EDGE,

Expand

Bands	Features
5G bands	FDD N1 / N3 / N5 / N7 / N8 / N20 / N28
	TDD N38 / N40 / N41 / N66 / N77 / N78
4G bands	TD-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)
3G bands	UMTS 1900 / 2100 / 850 / 900 MHz
2G Bands	GSM 1800 / 1900 / 850 / 900 MHz
GPRS	Available
EDGE	Available

SIM 2

4G bands, 3G bands, 2G bands, GPRS, EDGE,

Expand

Bands	Features
4G bands	TD-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)
3G bands	UMTS 1900 / 2100 / 850 / 900 MHz
2G Bands	GSM 1800 / 1900 / 850 / 900 MHz
GPRS	Available
EDGE	Available

SAR Value

Head: 0.74 W/kg, Body: 1.08 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, v5.0

GPS

Yes with A-GPS, Glonass

NFC

Yes

USB Connectivity

Mass storage device, USB charging

Multimedia

FM Radio	No
Stereo Speakers	Yes
Loudspeaker	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