Samsung Galaxy S21 5G

Released 2021, January 29
169g (Sub6), 171g (mmWave), 7.9mm thickness
Android 11, up to 4 major upgrades
128GB/256GB storage, no card slot
10% 14,718,464 hits
744 Become a fan
6.2"
1080x2400 pixels
64MP
4320p
6/8GB RAM
Exynos 2100
4000mAh
25W15W

Versions: SM-G991B, SM-G991B/DS (International); SM-G991U (USA); SM-G991U1 (USA unlocked); SM-G991W (Canada); SM-G991N (Korea); SM-G9910 (China)

Network	Technology	GSM / CDMA / HSPA / EVDO / LTE / 5G
	2G bands	GSM 850 / 900 / 1800 / 1900
		CDMA 800 / 1900 & TD-SCDMA
	3G bands	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
		CDMA2000 1xEV-DO
	4G bands	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
		1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G991B
	5G bands	2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G991U1
		1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G991B
	Speed	HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)

Launch	Announced	2021, January 14
Launch	Status	Available. 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	Nano-SIM + eSIM Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
		IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)

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, up to 4 major Android upgrades, One UI 6.1
	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 Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
	GPU	Mali-G78 MP14 - International Adreno 660 - USA/China

Memory	Card slot	No
	Internal	128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
		UFS 3.1

Main Camera	Triple	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@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS

Selfie camera	Single	10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF
	Features	HDR
	Video	4K@30/60fps, 1080p@30fps

Sound	Loudspeaker	Yes, with stereo speakers
	3.5mm jack	No
		32-bit/384kHz audio Tuned by AKG

Comms	WLAN	Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
	Bluetooth	5.0, A2DP, LE
	Positioning	GPS, GLONASS, BDS, GALILEO
	NFC	Yes
	Radio	FM radio (Snapdragon model only; market/operator dependent)
	USB	USB Type-C 3.2, OTG

Features	Sensors	Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
		Samsung DeX, Samsung Wireless DeX (desktop experience support) Circle to Search

Battery	Type	Li-Ion 4000 mAh
	Charging	25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless

Misc	Colors	Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
	Models	SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910, SM-G991Q, SCG09
	SAR	0.74 W/kg (head) 1.08 W/kg (body)
	SAR EU	0.46 W/kg (head) 1.51 W/kg (body)
	Price	$ 169.94 / C$ 239.00 / £ 157.21 / € 229.00


Tests	Performance	AnTuTu: 584055 (v8) GeekBench: 3238 (v5.1) GFXBench: 60fps (ES 3.1 onscreen)
	Display	856 nits max brightness (measured)
	Camera	Photo / Video
	Loudspeaker	-26.4 LUFS (Good)
	Battery (old)	Endurance rating 93h

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128GB 8GB RAM	$ 169.94	C$ 239.00
256GB 8GB RAM	$ 213.82	C$ 699.00

Samsung Galaxy S21 5G - user opinions and reviews

Anonymous
3qM
12 hours ago

A lot better after Android 15 upgrade, often old software can corrupt and slow down your phone, even on iPhone. Great to access the new AI features without upgrading to something new. Also, there was a black screen issue and it seems to have been a s...

Galaxy s21.
Y1X
22 May 2025

Great phone the only issue i had so far was heating up very fast

Simon
m0y
22 May 2025

Still a great phone! I have both S21, S22 and S23. I can tell you that S21 is better than S22. Better photography, better performance, better display and of course better battery. Now I will sell S22 and keep only S23 and S21. S23 slightly better tha...

Samsung Galaxy S21 5G

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Samsung Galaxy S21 5G review

Samsung Galaxy S21 5G - user opinions and reviews

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