Comparison of Vivo Y51 (2020, September) and Vivo S1 (China)

Comparison of Vivo Y51 (2020, September) and Vivo S1 (China) [S]ave

Attribute	Vivo S1 (China) ×	Vivo Y51 (2020, September) ×
General
Brand	Vivo	Vivo
Launch
Announced	2019-03-01	2020-09-15
Body
Width (mm)	8.5	8.7
Length (mm)	162	159.3
Height (mm)	76	75.2
Weight (g)	189.5	186.7
SIM	Dual SIM (Nano-SIM, dual stand-by)	Hybrid Dual SIM (Nano-SIM, dual stand-by)
Network
Technology	CDMA GSM HSPA LTE	GSM HSPA LTE
2G bands	CDMA 800 & TD GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 2100	HSDPA 850 / 900 / 2100
4G bands	1, 3, 5, 8, 34, 38, 39, 40, 41	1, 3, 5, 8, 40
Speed	HSPA 42.2/5.76 Mbps LTE-A (2CA) Cat7 300/50 Mbps	HSPA 42.2/5.76 Mbps LTE-A
Platform
OS	Android 9.0 (Pie)	Android 10
Chipset	Mediatek MT6771 Helio P70 (12nm)	Qualcomm SDM665 Snapdragon 665 (11 nm)
CPU	Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)	Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU	Mali-G72 MP3	Adreno 610
Memory
Card slot	microSDXC	microSDXC (uses shared SIM slot)
Internal	128GB 4GB RAM 128GB 6GB RAM	128GB 4GB RAM
Display
Size (in)	6.53	6.38
Resolution (px)	1080 x 2340	1080 x 2340
Display Type	IPS LCD	Super AMOLED
Battery
Type	Li-Po	Li-Po
Charging	Fast charging 18W	Fast charging 18W
Capcity (mAh)	3940	4500
Main Camera
Main Camera Type	Triple	Quad
Main Camera Properties	12 MP, f/1.8, 13mm (ultrawide), PDAF 5 MP, f/2.4, (depth) 8 MP, f/2.2, (wide)	2 MP, f/2.4, (depth) 2 MP, f/2.4, (macro) 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚, (ultrawide), 1/4.0", 1.12µm
Main Camera Video	1080p@30fps	1080p@30fps, gyro-EIS
Main Camera Features	LED flash, HDR, panorama	LED flash, HDR, panorama
Selfie Camera
Selfie Camera Type	Single	Single
Selfie Camera Properties	Motorized pop-up 25 MP, f/2.0	16 MP, f/2.0, (wide), 1/3.06" 1.0µm
Selfie Camera Video	1080p@30fps	1080p@30fps
Selfie Camera Features	HDR	HDR
Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth	5.0, A2DP, LE	5.0, A2DP, LE
GPS	+	+
NFC	-	-
Radio	FM radio	FM radio
USB	microUSB 2.0	USB Type-C 2.0, USB On-The-Go
Sound
Loudspeaker	+	+
3.5mm jack	+	+
Features
Sensors	Fingerprint (rear-mounted) accelerometer compass proximity	Fingerprint (under display accelerometer compass gyro optical) proximity
Misc
Colors	Blue Ice black Pink	Dreamy White Jazzy Blue Mystic Black
Models	V1831A V1831T	-