Vivo S1 (China) vs Vivo X21 UD comparison

Compare Vivo S1 (China)
Compare Vivo X21 UD
key specs
Display6.53-inch6.28-inch
ProcessorMediaTek P70Qualcomm Snapdragon 660
Front Camera24.8-megapixel 12-megapixel
Rear Camera12-megapixel + 8-megapixel + 5-megapixel 12-megapixel
RAM6GB6GB
Storage128GB128GB
Battery Capacity3940mAh3200mAh
OSAndroid PieAndroid 8.1
Resolution1080x2340 pixels1080x2280 pixels
general
BrandVivoVivo
ModelS1 (China)X21 UD
Release dateMarch 2019March 2018
Form factorTouchscreenTouchscreen
Dimensions (mm)161.97 x 75.93 x 8.54154.50 x 74.80 x 7.40
Weight (g)189.50156.20
Battery capacity (mAh)39403200
ColoursBlue, Peach PinkRuby Red, Aurora White, Black
display
Screen size (inches)6.536.28
TouchscreenYesYes
Resolution1080x2340 pixels1080x2280 pixels
Aspect ratio19.5:9-
hardware
Processorocta-coreocta-core
Processor makeMediaTek P70Qualcomm Snapdragon 660
RAM6GB6GB
Internal storage128GB128GB
Expandable storageYes-
Expandable storage typemicroSD-
Expandable storage up to (GB)256-
camera
Rear camera12-megapixel (f/1.78) + 8-megapixel (f/2.2) + 5-megapixel (f/2.4)12-megapixel
Front camera24.8-megapixel (f/2.0)12-megapixel
Rear flash-LED
software
Operating systemAndroid PieAndroid 8.1
SkinFunTouch OS 9FunTouch 4.0
connectivity
Wi-FiYesYes
GPSYesYes
BluetoothYesYes, v 5.00
USB OTGYesYes
Number of SIMs22
Wi-Fi standards supported-802.11 a/b/g/n/ac
Headphones-3.5mm
sensors
Fingerprint sensorYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYes-
Ambient light sensorYesYes
GyroscopeYesYes
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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