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Xiaomi Redmi S2 vs Oppo A83 (2018) vs Vivo V7 vs Mi A1 comparison

 Compare Xiaomi Redmi S2
Xiaomi Redmi S2
Compare Oppo A83 (2018)
Oppo A83 (2018)
Compare Vivo V7
Vivo V7
Compare Mi A1
Mi A1
key specs
Display5.99-inch5.70-inch5.70-inch5.50-inch
ProcessorQualcomm Snapdragon 625MediaTek MT6737TQualcomm Snapdragon 450Qualcomm Snapdragon 625
Front Camera16-megapixel8-megapixel24-megapixel 5-megapixel
Rear Camera12-megapixel13-megapixel16-megapixel 12-megapixel
RAM3GB4GB4GB4GB
Storage32GB64GB32GB64GB
Battery Capacity3080mAh3180mAh3000mAh3080mAh
OSAndroid 8.1 OreoAndroid 7.1Android 7.1.2Android 7.1.2
Resolution720x1440 pixels720x1440 pixels720x1440 pixels1080x1920 pixels
general
BrandXiaomiOppoVivoXiaomi
ModelRedmi S2A83 (2018)V7Mi A1
Release dateMay 1, 2018December 1, 2017November 1, 2017September 1, 2017
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)160.73 x 77.26 x 8.10150.50 x 73.10 x 7.70149.30 x 72.80 x 7.90155.40 x 75.80 x 7.30
Weight (g)170.00143.00139.00165.00
Battery capacity (mAh)3080318030003080
Removable batteryNo-NoNo
ColoursBlack, Rose Gold, Gold, White, Blue, Red, Pink, Gray, Silver-Champagne Gold, Matte BlackRose Gold, Gold, Black
Launched in India-YesYesYes
SAR value--0.94-
display
Screen size (inches)5.995.705.705.50
TouchscreenYesYesYesYes
Resolution720x1440 pixels720x1440 pixels720x1440 pixels1080x1920 pixels
Aspect ratio-18:918:916:9
Pixels per inch (PPI)--282-
hardware
Processor2GHz octa-core2.5GHz octa-core1.8GHz octa-core2GHz octa-core
Processor makeQualcomm Snapdragon 625MediaTek MT6737TQualcomm Snapdragon 450Qualcomm Snapdragon 625
RAM3GB4GB4GB4GB
Internal storage32GB64GB32GB64GB
Expandable storageYesYesYesYes
Expandable storage typemicroSDmicroSDmicroSDmicroSD
Expandable storage up to (GB)256256256128
camera
Rear camera12-megapixel13-megapixel16-megapixel (f/2.0, 1.0-micron)12-megapixel
Rear flashLEDLEDLEDDual LED
Front camera16-megapixel8-megapixel24-megapixel (f/2.0)5-megapixel
Front flashYes-Yes-
Rear autofocus--Phase detection autofocus-
software
Operating systemAndroid 8.1 OreoAndroid 7.1Android 7.1.2Android 7.1.2
SkinMIUI 9ColorOS 3.2Funtouch OS 3.2-
connectivity
Wi-FiYesYesYesYes
Wi-Fi standards supported802.11 b/g/n802.11 a/b/g/n802.11 b/g/n802.11 a/b/g/n/ac
GPSYesYesYesYes
BluetoothYes, v 4.20Yes, v 4.20Yes, v 4.20Yes, v 4.20
InfraredYesNoNoYes
Number of SIMs2222
NFC-NoNoNo
USB OTG-YesYesYes
Headphones-3.5mm3.5mm3.5mm
FM-YesYesNo
Micro-USB--Yes-
Wi-Fi Direct--NoNo
Mobile High-Definition Link (MHL)--NoNo
USB Type-C---Yes
sim 1
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sim 2
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sensors
Compass/ MagnetometerYes-YesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeYes-YesYes
Fingerprint sensor--YesYes
Barometer--NoNo
Temperature sensor--NoNo
ratings
Overall NDTV Rating--Read ReviewRead Review
Design Rating--
Display Rating--
Software Rating--
Performance Rating--
Battery Life Rating--
Camera Rating--
Value for Money Rating--

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