Updated : Jul 17, 2025, 8:21 AM

Samsung Galaxy S21

Full Specifications

Released · Jan 29, 2021

6.2-inch · 2400x1080px

This device is also known as Samsung SM-G991U1

8.5

Read Samsung Galaxy S21 Review

9.0

Read All User Reviews (4)

I want it 0 users

I have it 4 users

I had it 9 users

Deals

$145

$320

$550

Popular Comparisons

The Samsung Galaxy S21 is most commonly compared with these phones:

Availability
Officially announced	Jan 14, 2021
Prices (MSRP)	$800

Design
Dimensions	5.97 x 2.80 x 0.31 inches 151.7 x 71.2 x 7.9 mm
Weight	6.03 oz (171.0 g)
Materials	Back: Plastic Frame: Aluminum
Resistance	Water, Dust; IP68
Biometrics	2D Face unlock, Ultrasonic in-screen fingerprint
Keys	Right: Volume control, Lock/Unlock key
Colors	Phantom pink, Violet, Gray, White
This device has different variants: View all

Display
Size	6.2-inch, 86.06% screen-to-body
Type	Dynamic AMOLED, 120Hz, HDR, 1300 nits
Resolution	2400x1080px, 20:9 ratio, 424 PPI
Protection	Corning Gorilla Glass Victus

PhoneArena Display Test
Bright Max (20 APL)	Untested
Bright Min	1.2 (Good)
Learn more on our PhoneArena Display Test Results page.

Hardware
System chip	Snapdragon 888 (5 nm)
Processor	Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680
GPU	Adreno 660
Memory	8GB (LPDDR5)/128GB (UFS 3.0) 8GB/256GB
Storage expansion	not expandable
OS	Android (13, 12, 11)
This device has different variants: View all

Battery
Type	4000 mAh, Li - Polymer
Charging	Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging
Charge speed	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Test
Battery Life Estimate:	4h 28min
Browsing:	7h 47min
Gaming:	7h 9min
Video:	7h 36min
Learn more on our PhoneArena Battery Test Results page.

Camera
Rear	Triple camera
Main camera	12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm
Second camera	12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm
Third camera	64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm
Flash	LED
Video recording	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS
Front	10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

Connectivity & Features
Bluetooth	5.0
WLAN	a,b,g,n,ac,Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax
USB	Type-C, USB 3.2
Sensors	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor
Hearing aid compatible	M3/T3
Location	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other	NFC, ANT+

Multimedia
Headphones	No 3.5mm jack
Speakers	Earpiece, Multiple speakers
Features	32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Cellular
5G Bands	n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
4G (FDD) Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71
4G (TDD) Bands	38, 39, 40, 41, 46, 48
3G Bands	1, 2, 4, 5, 8
Data Speed	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
SIM type	Nano SIM
This device has different variants: View all

Regulatory Approval
FCC approval	Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U
Measured SAR	Head: 0.36 W/kg Body: 1.08 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.09 W/kg Phablet: 2.49 W/kg
This device has different variants: View all

Alternative variants

with 256GB storage

Differences from the main variant:
Memory	256GB

for Europe

Differences from the main variant:
System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 2900 MHz 1x2.91GHz Cortex-X1 3x2.81GHz Cortex-A78 4x2.2GHz Cortex-A55
GPU	Mali G78 MP14
Weight	5.96 oz (169.0 g)
5G Bands	SA, NSA, Sub-6
FCC approval	Date approved: Dec 18, 2020 FCC ID value: A3LSMG991B
Measured SAR	Head: 0.42 W/kg Body: 0.94 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.34 W/kg Phablet: 2.37 W/kg

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Overall User Rating

(4 reviews)

1 person recommends this phone.

Build quality

9.3

Camera quality

8.3

Performance

8.5

Display

9.3

Battery life and charging

Value for money

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