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vivo Y31

vivo Y51a

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 / 2100
4G Network	1, 3, 5, 8, 38, 40, 41	1, 3, 5, 8, 40
Speed	HSPA, LTE	HSPA, LTE

Launch
Announced	2021, January 20	2021, January 08
Status	Available. Released 2021, January 20	Available. Released 2021, January 23

Body
Dimensions	163.9 x 75.3 x 8.4 mm (6.45 x 2.96 x 0.33 in)	163.9 x 75.3 x 8.4 mm (6.45 x 2.96 x 0.33 in)
Weight	188 g (6.63 oz)	188 g (6.63 oz)
SIM	Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)

Display
Type	IPS LCD	IPS LCD
Size	6.58 inches, 104.3 cm2 (~84.5% screen-to-body ratio)	6.58 inches, 104.3 cm2 (~84.5% screen-to-body ratio)
Resolution	1080 x 2408 pixels, 20:9 ratio (~401 ppi density)	1080 x 2408 pixels, 20:9 ratio (~401 ppi density)

Platform
OS	Android 11, Funtouch 11	Android 11, upgradable to Android 12, Funtouch 12
Chipset	Qualcomm SM6115 Snapdragon 662 (11 nm)	Qualcomm SM6115 Snapdragon 662 (11 nm)
CPU	Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)	Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU	Adreno 610	Adreno 610

Memory
Card slot	microSDXC (dedicated slot)	microSDXC (dedicated slot)
Internal	64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM	128GB 6GB RAM, 128GB 8GB RAM

Main Camera
Modules	48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth)	48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro)
Features	LED flash, HDR, panorama	LED flash, HDR, panorama
Video	4K@30fps, 1080p@30fps, gyro-EIS	4K@30fps, 1080p@30fps, gyro-EIS

Selfie Camera
Modules	16 MP, f/2.0, (wide), 1/3.06" 1.0µm	16 MP, f/2.0, (wide), 1/3.06" 1.0µm
Features	HDR	HDR
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	No
Infrared port	No	No
Radio	FM radio	FM radio
USB	USB Type-C 2.0, OTG	USB Type-C 2.0, OTG

Features
Sensors	Fingerprint (side-mounted), accelerometer, gyro, proximity, compass	Fingerprint (side-mounted), accelerometer, gyro, proximity, compass

Battery
Type	5000 mAh, non-removable	5000 mAh, non-removable
Charging	18W wired, 70% in 67 min (advertised)	18W wired, 70% in 67 min (advertised)

Misc
Colors	Racing Black, Ocean Blue	Titanium Sapphire, Crystal Symphony
SAR		0.87 W/kg (head)     0.39 W/kg (body)
Models	V2036, V2036_21	V2031
Price	About 190 EUR	About 200 EUR