Vivo Y31 vs Vivo X21 UD comparison

Show Only Differences Highlight Differences	Vivo Y31	Vivo X21 UD
key specs
Display	6.58-inch	6.28-inch
Processor	Qualcomm Snapdragon 662	Qualcomm Snapdragon 660
Front Camera	16-megapixel	12-megapixel
Rear Camera	48-megapixel + 2-megapixel + 2-megapixel	12-megapixel
RAM	6GB	6GB
Storage	128GB	128GB
Battery Capacity	5000mAh	3200mAh
OS	Android 11	Android 8.1
Resolution	1080x2408 pixels	1080x2280 pixels
general
Brand	Vivo	Vivo
Model	Y31	X21 UD
Release date	January 20, 2021	March 1, 2018
Launched in India	Yes	-
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	163.86 x 75.32 x 8.38	154.50 x 74.80 x 7.40
Weight (g)	188.00	156.20
Battery capacity (mAh)	5000	3200
Fast charging	Proprietary	-
Colours	Ocean Blue, Racing Black	Ruby Red, Aurora White, Black
display
Screen size (inches)	6.58	6.28
Touchscreen	Yes	Yes
Resolution	1080x2408 pixels	1080x2280 pixels
Aspect ratio	20:9	-
hardware
Processor	octa-core	octa-core
Processor make	Qualcomm Snapdragon 662	Qualcomm Snapdragon 660
RAM	6GB	6GB
Internal storage	128GB	128GB
camera
Rear camera	48-megapixel (f/1.79) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)	12-megapixel
Rear autofocus	Yes	-
Rear flash	Yes	LED
Front camera	16-megapixel (f/2.0)	12-megapixel
software
Operating system	Android 11	Android 8.1
Skin	Funtouch OS 11	FunTouch 4.0
connectivity
Wi-Fi	Yes	Yes
GPS	Yes	Yes
Bluetooth	Yes, v 5.00	Yes, v 5.00
USB OTG	Yes	Yes
USB Type-C	Yes	-
FM	Yes	-
Number of SIMs	2	2
Wi-Fi standards supported	-	802.11 a/b/g/n/ac
Headphones	-	3.5mm
sim 1
SIM Type	Nano-SIM	Micro-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
sim 2
SIM Type	Nano-SIM	Micro-SIM
GSM/CDMA	GSM	GSM
3G	Yes	Yes
4G/ LTE	Yes	Yes
sensors
Fingerprint sensor	Yes	-
Compass/ Magnetometer	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	-
Ambient light sensor	Yes	Yes
Gyroscope	-	Yes

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