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Specifications

	Compare with Xiaomi 12X	Compare with Samsung Galaxy S21 5G
Full Differences Change compare mode	Review Specs 128GB 8GB RAM $ 369.99	Review Specs 128GB 8GB RAM $ 184.00

Xiaomi 12X

Samsung Galaxy S21 5G

Our video review on Youtube

Our video review on Youtube

Network
Technology	GSM / CDMA / HSPA / EVDO / LTE / 5G	GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only)
	CDMA 800	CDMA 800 / 1900 & TD-SCDMA
3G Network	HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
	CDMA2000 1xEV-DO	CDMA2000 1xEV-DO
4G Network	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66 - International	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, 18, 19, 26, 34, 38, 39, 40, 41, 42 - China	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 Network	1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA - International	2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G991U1
	1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA - China	1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G991B
Speed	HSPA, LTE, 5G	HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)

Launch
Announced	2021, December 28	2021, January 14
Status	Available. Released 2021, December 31	Available. Released 2021, January 29

Body
Dimensions	152.7 x 69.9 x 8.2 mm (6.01 x 2.75 x 0.32 in)	151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
3D size compare	Size up
Weight	176 g (6.21 oz)	169 g (Sub6), 171 g (mmWave) (5.96 oz)
Build		Glass front (Gorilla Glass Victus), plastic back, aluminum frame
SIM	Dual SIM (Nano-SIM, dual stand-by)	Nano-SIM and eSIM or Dual SIM (2 Nano-SIMs and eSIM, dual stand-by)
		IP68 dust/water resistant (up to 1.5m for 30 min)

Display
Type	AMOLED, 68B colors, 120Hz, Dolby Vision, HDR10+, 1100 nits (peak)	Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
Size	6.28 inches, 95.2 cm² (~89.2% screen-to-body ratio)	6.2 inches, 94.1 cm² (~87.2% screen-to-body ratio)
Resolution	1080 x 2400 pixels, 20:9 ratio (~419 ppi density)	1080 x 2400 pixels, 20:9 ratio (~421 ppi density)
Protection	Corning Gorilla Glass Victus	Corning Gorilla Glass Victus
		Always-on display

Platform
OS	Android 11, MIUI 13	Android 11, upgradable to Android 14, One UI 6.1
Chipset	Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)	Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
CPU	Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)	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	Adreno 650	Mali-G78 MP14 - International Adreno 660 - USA/China

Memory
Card slot	No	No
Internal	128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM	128GB 8GB RAM, 256GB 8GB RAM
	UFS 3.1	UFS 3.1

Main Camera
Modules	50 MP, f/1.9, 26mm (wide), 1/1.56", 1.0µm, PDAF, OIS 13 MP, f/2.4, 12mm, 123˚ (ultrawide), 1/3.06", 1.12µm 5 MP, f/2.4, 50mm (telephoto macro), AF	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	Dual-LED dual-tone flash, HDR, panorama	LED flash, auto-HDR, panorama
Video	8K@24fps, 4K@30/60fps, 1080p@30/120/240/960fps, gyro-EIS	8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS

Selfie Camera
Modules	32 MP, f/2.5, 26mm (wide), 0.7µm	10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF
Features	HDR, panorama	Dual video call, Auto-HDR
Video	1080p@30/60fps, 720p@120fps, HDR	4K@30/60fps, 1080p@30fps

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Sound
Loudspeaker	Yes, with stereo speakers	Yes, with stereo speakers
3.5mm jack	No	No
	24-bit/192kHz Hi-Res audio Tuned by Harman Kardon	32-bit/384kHz audio Tuned by AKG

Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi 6 (market dependent), dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Bluetooth	5.1 / 5.2, A2DP, LE	5.0, A2DP, LE
Positioning	GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)	GPS, GLONASS, BDS, GALILEO
NFC	Yes (market/region dependent)	Yes
Infrared port	Yes	No
Radio	No	FM radio (Snapdragon model only; market/operator dependent)
USB	USB Type-C 2.0, OTG	USB Type-C 3.2, OTG

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

Battery
Type	Li-Po 4500 mAh, non-removable	Li-Ion 4000 mAh, non-removable
Charging	67W wired, PD3.0, QC4, 100% in 39 min (advertised)	25W wired, PD3.0 15W wireless (Qi/PMA) 4.5W reverse wireless

Misc
Colors	Gray, Blue, Purple	Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
SAR		0.74 W/kg (head) 1.08 W/kg (body)
SAR EU	0.59 W/kg (head) 1.00 W/kg (body)	0.46 W/kg (head) 1.51 W/kg (body)
Models	2112123AC, 2112123AG	SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910, SM-G991Q, SCG09
Price	$ 369.99 / € 193.95	$ 184.00 / C$ 329.00 / £ 188.50 / € 263.38

Tests
Performance	AnTuTu: 598003 (v8), 690298 (v9) GeekBench: 3168 (v5.1) GFXBench: 47fps (ES 3.1 onscreen)	AnTuTu: 584055 (v8) GeekBench: 3238 (v5.1) GFXBench: 60fps (ES 3.1 onscreen)
Display	Contrast ratio: Infinite (nominal)	Contrast ratio: Infinite (nominal)
Camera	Compare PHOTO / Compare VIDEO
Loudspeaker	-25.6 LUFS (Very good)	-26.4 LUFS (Good)
Battery (old)	Endurance rating 105h	Endurance rating 93h

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