Oppo A3s vs Vivo Y81 comparison

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general
Form factorTouchscreenTouchscreen--
Dimensions (mm)156.20 x 75.60 x 8.20155.06 x 75.00 x 7.77--
Weight (g)168.00146.50--
Battery capacity (mAh)42303260--
ColoursRed, Dark PurpleBlack--
Release date-June 2018--
Launched in India-Yes--
Body type-Plastic--
display
Screen size (inches)6.206.22--
TouchscreenYesYes--
Resolution720x1520 pixels720x1520 pixels--
Aspect ratio19:919:9--
Pixels per inch (PPI)-270--
hardware
Processor1.8GHz octa-core2GHz octa-core--
Processor makeSnapdragon 450MediaTek MT6762--
RAM2GB3GB--
Internal storage16GB32GB--
Expandable storageYesYes--
Expandable storage typemicroSDmicroSD--
Expandable storage up to (GB)256256--
camera
Rear camera13-megapixel (f/2.2) + 2-megapixel (f/2.4)13-megapixel (f/2.2)--
Rear autofocusYesPhase detection autofocus--
Rear flashLEDLED--
Front camera8-megapixel (f/2.2)5-megapixel (f/2.2)--
software
Operating systemAndroid 8.1 OreoAndroid 8.1--
SkinColorOS 5.1FunTouch OS 4.0--
connectivity
Wi-FiYesYes--
GPSYesYes--
BluetoothYes, v 4.20Yes, v 5.00--
Micro-USBYesYes--
Headphones3.5mm3.5mm--
Wi-Fi standards supported-802.11 b/g/n--
Number of SIMs-2--
sensors
Compass/ MagnetometerYesYes--
Proximity sensorYesYes--
AccelerometerYesYes--
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--