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	Compare with vivo X21	Compare with Xiaomi Mi Mix 2S
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vivo X21

Xiaomi Mi Mix 2S

Network
Technology	GSM / CDMA / HSPA / LTE	GSM / CDMA / HSPA / EVDO / LTE
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
	CDMA 800 & TD-SCDMA	CDMA 800 / 1900 & TD-SCDMA
3G Network	HSDPA 850 / 900 / 1900 / 2100	HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
		CDMA2000 1xEV-DO
4G Network	1, 2, 3, 5, 8, 34, 38, 39, 40, 41	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 34, 38, 39, 40, 41
Speed	HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps	HSPA 42.2/5.76 Mbps, LTE (3CA) Cat18 1200/100 Mbps

Launch
Announced	2018, March	2018, March
Status	Available. Released 2018, March	Available. Released 2018, April

Body
Dimensions	154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)	150.9 x 74.9 x 8.1 mm (5.94 x 2.95 x 0.32 in)
Weight	156.2 g (5.50 oz)	191 g (6.74 oz)
Build	Glass front (Gorilla Glass 3), aluminum back, aluminum frame	Glass front (Gorilla Glass 4), ceramic back, aluminum frame
SIM	Hybrid Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)

Display
Type	Super AMOLED	IPS LCD
Size	6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio)	5.99 inches, 92.6 cm2 (~81.9% screen-to-body ratio)
Resolution	1080 x 2280 pixels, 19:9 ratio (~402 ppi density)	1080 x 2160 pixels, 18:9 ratio (~403 ppi density)
Protection	Corning Gorilla Glass 3	Corning Gorilla Glass 4

Platform
OS	Android 8.1 (Oreo), Funtouch 4	Android 8.0 (Oreo), upgradable to Android 10, MIUI 12
Chipset	Qualcomm SDM660 Snapdragon 660 (14 nm)	Qualcomm SDM845 Snapdragon 845 (10 nm)
CPU	Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)	Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver)
GPU	Adreno 512	Adreno 630

Memory
Card slot	microSDXC (uses shared SIM slot)	No
Internal	64GB 6GB RAM, 128GB 6GB RAM	64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM
	eMMC 5.1	UFS 2.1

Main Camera
Modules	12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF 5 MP, f/2.4, (depth)	12 MP, f/1.8, (wide), 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS 12 MP, f/2.4, (telephoto), 1/3.4", 1.0µm, AF, 2x optical zoom
Features	LED flash, HDR, panorama	Dual-LED dual-tone flash, HDR, panorama
Video	1080p@30fps	4K@30fps, 1080p@30/120fps, 720p@240fps

Selfie Camera
Modules	12 MP, f/2.0, (wide), 1/2.8", 1.28µm	5 MP, f/2.0, (wide), 1/4.0", 1.4µm
Video	1080p@30fps	1080p@30fps

Sound
Loudspeaker	Yes	Yes
3.5mm jack	Yes	No
	32-bit/192kHz Hi-Res audio

Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth	5.0, A2DP, LE	5.0, A2DP, LE
Positioning	GPS, GLONASS	GPS, GLONASS, BDS
NFC	No	Yes
Infrared port	No	No
Radio	FM radio	No
USB	microUSB 2.0, OTG	USB Type-C 2.0

Features
Sensors	Fingerprint (rear-mounted), accelerometer, proximity, compass	Fingerprint (rear-mounted), accelerometer, gyro, compass
		Virtual proximity sensing

Battery
Type	Li-Ion 3200 mAh, non-removable	Li-Ion 3400 mAh, non-removable
Charging	18W wired	18W wired, QC3 7.5W wireless (Qi)

Misc
Colors	Black, Aurora White, Ruby Red	Black, White
SAR		0.54 W/kg (head)     1.59 W/kg (body)
Models	1725, X21A	M1803D5XA
Price	About 450 EUR	About 270 EUR

Tests
Performance		AnTuTu: 270814 (v7) GeekBench: 9158 (v4.4) GFXBench: 34fps (ES 3.1 onscreen)
Loudspeaker		Voice 68dB / Noise 70dB / Ring 81dB
Audio quality		Noise -93.0dB / Crosstalk -92.5dB
Battery (old)		Endurance rating 59h