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Xiaomi Mi A2 vs Vivo X21 vs Vivo V9 comparison

 Compare Xiaomi Mi A2
Xiaomi Mi A2
Compare Vivo X21
Vivo X21
Compare Vivo V9
Vivo V9
ratings
Overall NDTV RatingRead ReviewRead ReviewRead Review
Design Rating
Display Rating
Software Rating
Performance Rating
Battery Life Rating
Camera Rating
Value for Money Rating
key specs
Display5.99-inch6.28-inch6.30-inch
ProcessorQualcomm Snapdragon 660Qualcomm Snapdragon 660Qualcomm Snapdragon 626
Front Camera20-megapixel 12-megapixel 24-megapixel
Rear Camera12-megapixel + 20-megapixel 12-megapixel + 5-megapixel 16-megapixel + 5-megapixel
RAM4GB6GB4GB
Storage64GB128GB64GB
Battery Capacity3000mAh3200mAh3260mAh
OSAndroid 8.1 OreoAndroid 8.1Android 8.1
Resolution1080x2160 pixels1080x2280 pixels1080x2280 pixels
general
BrandXiaomiVivoVivo
ModelMi A2X21V9
Release dateJuly 1, 2018March 1, 2018March 1, 2018
Launched in IndiaYesYesYes
Form factorTouchscreenTouchscreenTouchscreen
Dimensions (mm)158.70 x 75.40 x 7.30154.50 x 74.80 x 7.40154.80 x 75.00 x 7.90
Weight (g)168.00156.20150.00
Battery capacity (mAh)300032003260
Removable batteryNoNoNo
ColoursBlack, Gold, Lake Blue, Rose GoldBlack, GoldPearl Black, Gold
Fast charging-Proprietary-
SAR value--1.38
display
Screen size (inches)5.996.286.30
TouchscreenYesYesYes
Resolution1080x2160 pixels1080x2280 pixels1080x2280 pixels
Aspect ratio18:919:919:9
Pixels per inch (PPI)403--
hardware
Processorocta-core (4x2.2GHz + 4x1.8GHz)2.2GHz octa-core2.2GHz octa-core
Processor makeQualcomm Snapdragon 660Qualcomm Snapdragon 660Qualcomm Snapdragon 626
RAM4GB6GB4GB
Internal storage64GB128GB64GB
Expandable storageNoYesYes
Expandable storage typemicroSDmicroSDmicroSD
Expandable storage up to (GB)-256256
camera
Rear camera12-megapixel (f/1.8, 1.25-micron) + 20-megapixel (f/1.8, 1.0-micron)12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)16-megapixel (f/2.0) + 5-megapixel
Rear autofocusPhase detection autofocusPhase detection autofocusPhase detection autofocus
Rear flashDual LEDLEDDual LED
Front camera20-megapixel (f/2.2, 1.0-micron)12-megapixel (f/2.0)24-megapixel (f/2.0)
Front flashLED--
software
Operating systemAndroid 8.1 OreoAndroid 8.1Android 8.1
Skin-FunTouch 4.0FunTouch OS 4.0
connectivity
Wi-FiYesYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 a/b/g/n/ac-
GPSYesYesYes
BluetoothYes, v 5.00Yes, v 5.00Yes, v 4.20
NFCYesNo-
USB OTGYesYesYes
HeadphonesNo3.5mm3.5mm
Number of SIMs222
Wi-Fi DirectYes--
Infrared-No-
Micro-USB-YesYes
FM-NoYes
sim 1
SIM TypeNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTEYesYesYes
sim 2
SIM TypeNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTEYesYesYes
sensors
Fingerprint sensorYesYesYes
Compass/ MagnetometerYesYesYes
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYesYesYes
GyroscopeYesYesYes
Face unlock--Yes

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