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	Compare with vivo S1	Compare with Xiaomi Redmi Note 9
Full Differences Change compare mode	Review Specs	Review Specs 128GB 4GB RAM $ 104.40

vivo S1

Xiaomi Redmi Note 9

Network
Technology	GSM / HSPA / LTE	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network	HSDPA 850 / 900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network	1, 3, 5, 7, 8, 20, 38, 40, 41 - Asia	1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41
	1, 3, 5, 8, 34, 38, 39, 40, 41 - China
Speed	HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/150 Mbps	HSPA, LTE

Launch
Announced	2019, July 17	2020, April 30
Status	Available. Released 2019, July	Available. Released 2020, May 12

Body
Dimensions	159.5 x 75.2 x 8.1 mm (6.28 x 2.96 x 0.32 in)	162.3 x 77.2 x 8.9 mm (6.39 x 3.04 x 0.35 in)
Weight	179 g (6.31 oz)	199 g (7.02 oz)
Build	Glass front, plastic back, plastic frame	Glass front (Gorilla Glass 5), plastic frame, plastic back
SIM	Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)
		Water-repellent coating

Display
Type	Super AMOLED	IPS LCD, 450 nits (typ)
Size	6.38 inches, 99.9 cm2 (~83.3% screen-to-body ratio)	6.53 inches, 104.7 cm2 (~83.5% screen-to-body ratio)
Resolution	1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density)	1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)
Protection		Corning Gorilla Glass 5
	Always-on display

Platform
OS	Android 9.0 (Pie), Funtouch 9	Android 10, upgradable to Android 11, MIUI 12.5 E
Chipset	Mediatek MT6768 Helio P65 (12nm)	Mediatek MT6769Z Helio G85 (12nm)
CPU	Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)	Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU	Mali-G52 MC2	Mali-G52 MC2

Memory
Card slot	microSDXC (dedicated slot)	microSDXC (dedicated slot)
Internal	64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 256GB 6GB RAM	64GB 3GB RAM, 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
	eMMC 5.1

Main Camera
Modules	16 MP, f/1.8, (wide), 1/2.8", 1.12µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (depth)	48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 118˚ (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro), AF 2 MP, f/2.4, (depth)
Features	LED flash, HDR, panorama	LED flash, HDR, panorama
Video	1080p@30fps	1080p@30fps

Selfie Camera
Modules	32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm	13 MP, f/2.3, 29mm (standard), 1/3.1", 1.12µm
Features	HDR	HDR, panorama
Video	1080p@30fps	1080p@30fps

Sound
Loudspeaker	Yes	Yes
3.5mm jack	Yes	Yes

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, GALILEO, BDS	GPS, GLONASS, GALILEO, BDS
NFC	No	Yes (market/region dependent) M2003J15SG (Yes); M2003J15SS (No)
Infrared port	No	Yes
Radio	FM radio	FM radio, built-in antenna
USB	microUSB 2.0, OTG	USB Type-C 2.0

Features
Sensors	Fingerprint (under display, optical), accelerometer, proximity, compass	Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass

Battery
Type	4500 mAh, non-removable	Li-Po 5020 mAh, non-removable
Charging	18W wired	18W wired 9W reverse wired

Misc
Colors	Diamond Black, Skyline Blue, Cosmic Green	Forest Green, Midnight Grey, Polar White
SAR		0.84 W/kg (head)     0.90 W/kg (body)
SAR EU		0.80 W/kg (head)     1.14 W/kg (body)
Models	1907, V1907, 1907_19, V1913A	M2003J15SC, M2003J15SG, M2003J15SS
Price	About 230 EUR	$ 104.40 / £ 109.00 / € 85.52 / ₹ 6,888

Tests
Performance		AnTuTu: 200414 (v8) GeekBench: 1292 (v5.1)
Display		Contrast ratio: 1242:1 (nominal)
Loudspeaker		-30.1 LUFS (Below average)
Battery (old)		Endurance rating 125h