vivo X51 5G vs Samsung Galaxy S21 5G

Phones Images

PHONES
Phone Names	vivo X51 5G	Samsung Galaxy S21 5G

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

Launch
Announced	2020, October 21. Released 2020, October 23	2021, January 14
Status	Discontinued	Available. Released 2021, January 29

Body
Build	Glass front, glass back, aluminum frame	Glass front (Gorilla Glass Victus), plastic back, aluminum frame
Dimensions	158.5 x 72.8 x 8 mm (6.24 x 2.87 x 0.31 in)	151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
Keyboard	QWERTY	-
SIM	Nano-SIM + Nano-SIM	· Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Weight	181.5 g (6.42 oz)	169 g (Sub6), 171 g (mmWave) (5.96 oz)
	-	IP68 dust/water resistant (up to 1.5m for 30 min)

Display
Protection	-	Corning Gorilla Glass Victus
Resolution	1080 x 2376 pixels (~398 ppi density)	1080 x 2400 pixels, 20:9 ratio (~421 ppi density)
Size	6.56 inches, 104.6 cm2 (~90.6% screen-to-body ratio)	6.2 inches, 94.1 cm2 (~87.2% screen-to-body ratio)
Type	AMOLED, 90Hz, HDR10+	Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
	-	Always-on display

Platform
CPU	Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)	Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - InternationalOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
Chipset	Qualcomm SM7250 Snapdragon 765G 5G (7 nm)	Exynos 2100 (5 nm) - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
GPU	Adreno 620	Mali-G78 MP14 - InternationalAdreno 660 - USA/China
OS	Android 10, Funtouch 10.0	Android 11, up to 4 major Android upgrades, One UI 6.1

Memory
Card slot	No	No
Internal	256GB 8GB RAM	128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
	UFS 2.1	UFS 3.1

Main Camera
Features	Laser AF, color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama	LED flash, auto-HDR, panorama
Quad	48 MP, f/1.6, (wide), PDAF, gimbal OIS 8 MP, f/3.4, 135mm (periscope telephoto), 1/4.0", PDAF, OIS, 5x optical zoom 13 MP, f/2.5, 50mm (telephoto), 1/2.8", 0.8µm, PDAF, 2x optical zoom 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm	-
Single	3.15 MP	-
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
Video	4K@30fps, 1080p@30fps, gyro-EIS	8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS

Selfie camera
Features	HDR	HDR
Single	32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm	10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF
Video	1080p@30fps	4K@30/60fps, 1080p@30fps

Sound
3.5mm jack	No	No
35mm jack	No	No
Loudspeaker	Yes	Yes, with stereo speakers
	32-bit/192kHz audio	32-bit/384kHz audio Tuned by AKG

Comms
Bluetooth	5.1, A2DP, LE, aptX HD	5.0, A2DP, LE
NFC	Yes	Yes
Positioning	GPS, GLONASS, GALILEO, BDS	GPS, GLONASS, BDS, GALILEO
Radio	No	FM radio (Snapdragon model only; market/operator dependent)
USB	USB Type-C 2.0, OTG	USB Type-C 3.2, OTG
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct

Features
Browser	HTML	-
Sensors	Fingerprint (under display, optical), accelerometer, gyro, proximity, compass	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
Charging	33W wired, 57% in 30 min	25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
Music play	Up to 5 h	-
Stand-by	Up to 312 h	-
Talk time	Up to 3 h	-
Type	4315 mAh	Li-Ion 4000 mAh

Misc
Colors	Gray	Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
Models	XE710	SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910, SM-G991Q, SCG09
Price	About 760 EUR	€ 194.00 / $ 153.58 / £ 149.99
SAR	0.35 W/kg (head)     0.95 W/kg (body)	0.74 W/kg (head)     1.08 W/kg (body)
SAR EU	0.20 W/kg (head)	0.46 W/kg (head)     1.51 W/kg (body)

Pricing
128GB 8GB RAM	-	$ 249.00
256GB 8GB RAM	$ 885.00	$ 289.99
RENEWED	-	$ 317.00

Tests
Battery life	-	Endurance rating 93h
Camera	-	Photo / Video
Display	-	Contrast ratio: Infinite (nominal)
Loudspeaker	-	-26.4 LUFS (Good)
Performance	-	AnTuTu: 584055 (v8) GeekBench: 3238 (v5.1) GFXBench: 60fps (ES 3.1 onscreen)

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