Vivo S1 Pro (China) vs Vivo X21 UD comparison

Show Only Differences Highlight Differences	Vivo S1 Pro (China)	Vivo X21 UD
key specs
Display	6.39-inch	6.28-inch
Front Camera	32-megapixel	12-megapixel
Rear Camera	48-megapixel + 8-megapixel + 5-megapixel	12-megapixel
RAM	6GB	6GB
Storage	128GB	128GB
Battery Capacity	3700mAh	3200mAh
OS	Android Pie	Android 8.1
Resolution	1080x2340 pixels	1080x2280 pixels
Processor	-	Qualcomm Snapdragon 660
general
Brand	Vivo	Vivo
Model	S1 Pro (China)	X21 UD
Release date	May 3, 2019	March 1, 2018
Launched in India	No	-
Dimensions (mm)	157.25 x 74.71 x 8.21	154.50 x 74.80 x 7.40
Weight (g)	185.00	156.20
Battery capacity (mAh)	3700	3200
Colours	Love Blue, Coral Red	Ruby Red, Aurora White, Black
Form factor	-	Touchscreen
display
Screen size (inches)	6.39	6.28
Touchscreen	Yes	Yes
Resolution	1080x2340 pixels	1080x2280 pixels
Aspect ratio	19.5:9	-
hardware
Processor make	Qualcomm Snapdragon 675	Qualcomm Snapdragon 660
RAM	6GB	6GB
Internal storage	128GB	128GB
Expandable storage	Yes	-
Expandable storage type	microSD	-
Expandable storage up to (GB)	128	-
Processor	-	octa-core
camera
Rear camera	48-megapixel (f/1.7) + 8-megapixel (f/2.2) + 5-megapixel (f/2.4)	12-megapixel
Rear autofocus	Yes	-
Rear flash	Yes	LED
Front camera	32-megapixel (f/2.0)	12-megapixel
Pop-Up Camera	Yes	-
software
Operating system	Android Pie	Android 8.1
Skin	FunTouch OS 9	FunTouch 4.0
connectivity
Wi-Fi	Yes	Yes
Bluetooth	Yes	Yes, v 5.00
Micro-USB	Yes	-
Number of SIMs	2	2
Wi-Fi standards supported	-	802.11 a/b/g/n/ac
GPS	-	Yes
USB OTG	-	Yes
Headphones	-	3.5mm
sensors
Fingerprint sensor	Yes	-
Compass/ Magnetometer	-	Yes
Proximity sensor	-	Yes
Ambient light sensor	-	Yes
Gyroscope	-	Yes
sim 1
SIM Type	-	Micro-SIM
GSM/CDMA	-	GSM
3G	-	Yes
4G/ LTE	-	Yes
sim 2
SIM Type	-	Micro-SIM
GSM/CDMA	-	GSM
3G	-	Yes
4G/ LTE	-	Yes

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