Oppo R9 Plus vs Xiaomi Redmi 3 vs Vivo Y51 comparison

Compare Oppo R9 Plus
Compare Xiaomi Redmi 3
Compare Vivo Y51
key specs
Display6.00-inch5.00-inch5.00-inch
ProcessorQualcomm Snapdragon 652 Qualcomm Snapdragon 6161.2GHz quad-core
Front Camera16-megapixel5-megapixel5-megapixel
Rear Camera16-megapixel13-megapixel8-megapixel
RAM4GB2GB2GB
Storage64GB16GB16GB
Battery Capacity4120mAh4100mAh2350mAh
OSAndroid 5.1AndroidAndroid 5.0.2
Resolution1080x1920 pixels720x1280 pixels540x960 pixels
general
BrandOppoXiaomiVivo
ModelR9 PlusRedmi 3Y51
Release dateMarch 2016January 2016November 2015
Form factorTouchscreenTouchscreenTouchscreen
Dimensions (mm)163.10 x 80.70 x 7.40139.30 x 69.60 x 8.50143.80 x 71.70 x 7.52
Weight (g)185.00144.00157.00
Battery capacity (mAh)412041002350
Removable batteryNoNoNo
Colours--White
display
Screen size (inches)6.005.005.00
TouchscreenYesYesYes
Resolution1080x1920 pixels720x1280 pixels540x960 pixels
Pixels per inch (PPI)367--
hardware
Processor1.8GHz octa-core1.2GHz octa-core1.2GHz quad-core
Processor makeQualcomm Snapdragon 652 (MSM8976)Qualcomm Snapdragon 616-
RAM4GB2GB2GB
Internal storage64GB16GB16GB
Expandable storageYesYesYes
Expandable storage typemicroSDmicroSDmicroSD
Expandable storage up to (GB)128128128
camera
Rear camera16-megapixel13-megapixel8-megapixel
Rear flashLEDYesLED
Front camera16-megapixel5-megapixel5-megapixel
software
Operating systemAndroid 5.1AndroidAndroid 5.0.2
SkinColorOS 3.0MIUI 7FunTouch OS
connectivity
Wi-FiYesYesYes
GPSYesYesYes
BluetoothYesYes, v 4.10Yes
NFCNoNoNo
InfraredNoYesNo
USB OTGYesYesNo
Headphones3.5mm3.5mm3.5mm
FMNoYesYes
Number of SIMs222
Wi-Fi DirectNoYesNo
Mobile High-Definition Link (MHL)NoNoNo
Wi-Fi standards supported-802.11 b/g/n-
sim 1
SIM TypeMicro-SIMMicro-SIMMicro-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTEYesYesYes
sim 2
SIM TypeMicro-SIMNano-SIMMicro-SIM
GSM/CDMAGSMGSMGSM
3GYesYesNo
4G/ LTEYesYesYes
sensors
Compass/ MagnetometerNoYesNo
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYesYesYes
GyroscopeYesYesYes
BarometerNoNoNo
Temperature sensorNoNoNo
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