Vivo S1 (China) vs Vivo Y81 comparison

Show Only Differences Highlight Differences	Vivo S1 (China)	Vivo Y81
key specs
Display	6.53-inch	6.22-inch
Processor	MediaTek Helio P70	MediaTek Helio P22
Front Camera	24.8-megapixel	5-megapixel
Rear Camera	12-megapixel + 8-megapixel + 5-megapixel	13-megapixel
RAM	6GB	3GB
Storage	128GB	32GB
Battery Capacity	3940mAh	3260mAh
OS	Android Pie	Android 8.1
Resolution	1080x2340 pixels	720x1520 pixels
general
Brand	Vivo	Vivo
Model	S1 (China)	Y81
Release date	March 1, 2019	June 1, 2018
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	161.97 x 75.93 x 8.54	155.06 x 75.00 x 7.77
Weight (g)	189.50	146.50
Battery capacity (mAh)	3940	3260
Colours	Blue, Peach Pink	Black
Launched in India	-	Yes
Body type	-	Plastic
display
Screen size (inches)	6.53	6.22
Touchscreen	Yes	Yes
Resolution	1080x2340 pixels	720x1520 pixels
Aspect ratio	19.5:9	19:9
Pixels per inch (PPI)	-	270
hardware
Processor	octa-core	2GHz octa-core
Processor make	MediaTek Helio P70	MediaTek Helio P22 (MT6762)
RAM	6GB	3GB
Internal storage	128GB	32GB
Expandable storage	Yes	Yes
Expandable storage type	microSD	microSD
Expandable storage up to (GB)	256	256
camera
Rear camera	12-megapixel (f/1.78) + 8-megapixel (f/2.2) + 5-megapixel (f/2.4)	13-megapixel (f/2.2)
Front camera	24.8-megapixel (f/2.0)	5-megapixel (f/2.2)
Rear autofocus	-	Phase detection autofocus
Rear flash	-	LED
software
Operating system	Android Pie	Android 8.1
Skin	FunTouch OS 9	FunTouch OS 4.0
connectivity
Wi-Fi	Yes	Yes
GPS	Yes	Yes
Bluetooth	Yes	Yes, v 5.00
USB OTG	Yes	-
Number of SIMs	2	2
Wi-Fi standards supported	-	802.11 b/g/n
Micro-USB	-	Yes
Headphones	-	3.5mm
Wi-Fi Direct	-	Yes
sensors
Fingerprint sensor	Yes	-
Compass/ Magnetometer	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	Yes
Ambient light sensor	Yes	-
Gyroscope	Yes	-
sim 1
SIM Type	-	Nano-SIM
GSM/CDMA	-	GSM
3G	-	Yes
4G/ LTE	-	Yes
sim 2
SIM Type	-	Nano-SIM
GSM/CDMA	-	GSM
3G	-	Yes
4G/ LTE	-	Yes

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