Oppo A3s vs Vivo Y81 vs Vivo Y71 vs Oppo A83 comparison

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key specs
Display6.20-inch6.22-inch6.00-inch5.70-inch
ProcessorQualcomm Snapdragon 450MediaTek Helio P22 Qualcomm Snapdragon 425MediaTek MT6737T
Front Camera8-megapixel 5-megapixel 5-megapixel8-megapixel
Rear Camera13-megapixel + 2-megapixel 13-megapixel 13-megapixel13-megapixel
RAM2GB3GB3GB3GB
Storage16GB32GB16GB32GB
Battery Capacity4230mAh3260mAh3360mAh3180mAh
OSAndroid 8.1 OreoAndroid 8.1Android 8.1 OreoAndroid 7.1
Resolution720x1520 pixels720x1520 pixels720x1440 pixels720x1440 pixels
general
BrandOppoVivoVivoOppo
ModelA3sY81Y71A83
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)156.20 x 75.60 x 8.20155.06 x 75.00 x 7.77155.90 x 75.70 x 7.80150.50 x 73.10 x 7.70
Weight (g)168.00146.50150.00143.00
Battery capacity (mAh)4230326033603180
ColoursRed, Dark PurpleBlackBlack, GoldChampagne, Black
Release date-June 1, 2018April 1, 2018December 1, 2017
Launched in India-YesYes-
Body type-Plastic--
display
Screen size (inches)6.206.226.005.70
TouchscreenYesYesYesYes
Resolution720x1520 pixels720x1520 pixels720x1440 pixels720x1440 pixels
Aspect ratio19:919:918:918:9
Pixels per inch (PPI)-270--
hardware
Processor1.8GHz octa-core2GHz octa-core1.4GHz quad-core2.5GHz octa-core
Processor makeQualcomm Snapdragon 450MediaTek Helio P22 (MT6762)Qualcomm Snapdragon 425MediaTek MT6737T
RAM2GB3GB3GB3GB
Internal storage16GB32GB16GB32GB
Expandable storageYesYes-Yes
Expandable storage typemicroSDmicroSD-microSD
Expandable storage up to (GB)256256-256
camera
Rear camera13-megapixel (f/2.2) + 2-megapixel (f/2.4)13-megapixel (f/2.2)13-megapixel13-megapixel
Rear autofocusYesPhase detection autofocus--
Rear flashLEDLED-LED
Front camera8-megapixel (f/2.2)5-megapixel (f/2.2)5-megapixel8-megapixel
software
Operating systemAndroid 8.1 OreoAndroid 8.1Android 8.1 OreoAndroid 7.1
SkinColorOS 5.1FunTouch OS 4.0FunTouch OSColorOS 3.2
connectivity
Wi-FiYesYesYesYes
GPSYesYesYesYes
BluetoothYes, v 4.20Yes, v 5.00Yes, v 4.20Yes, v 4.20
Micro-USBYesYesYesYes
Headphones3.5mm3.5mm3.5mm3.5mm
Wi-Fi DirectYesYesYes-
Wi-Fi standards supported-802.11 b/g/n802.11 b/g/n802.11 a/b/g/n
Number of SIMs-222
FM--YesYes
NFC---No
Infrared---No
USB OTG---Yes
sensors
Compass/ MagnetometerYesYesYes-
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensor--YesYes
Gyroscope--Yes-
Face unlock---Yes
sim 1
SIM Type-Nano-SIMNano-SIMNano-SIM
GSM/CDMA-GSMGSMGSM
3G-YesYesYes
4G/ LTE-YesYesYes
sim 2
SIM Type-Nano-SIMNano-SIMNano-SIM
GSM/CDMA-GSMGSMGSM
3G-YesYesYes
4G/ LTE-YesYesYes
ratings
Overall NDTV Rating---Read Review
Design Rating---
Display Rating---
Software Rating---
Performance Rating---
Battery Life Rating---
Camera Rating---
Value for Money Rating---
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