Vivo X21 vs Vivo V9 vs Samsung Galaxy A8 (2018) comparison

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ratings
Overall NDTV RatingRead ReviewRead Review-
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
key specs
Display6.28-inch6.30-inch5.60-inch
ProcessorQualcomm Snapdragon 660Snapdragon 6261.6GHz octa-core
Front Camera12-megapixel 24-megapixel 16-megapixel
Rear Camera12-megapixel + 5-megapixel 16-megapixel + 5-megapixel16-megapixel
RAM6GB4GB4GB
Storage128GB64GB32GB
Battery Capacity3200mAh3260mAh3000mAh
OSAndroid 8.1Android 8.1Android 7.1.1
Resolution1080x2280 pixels1080x2280 pixels1080x2220 pixels
general
BrandVivoVivoSamsung
ModelX21V9Galaxy A8 (2018)
Release dateMarch 2018March 2018December 2017
Launched in IndiaYesYes-
Form factorTouchscreenTouchscreenTouchscreen
Dimensions (mm)154.50 x 74.80 x 7.40154.80 x 75.00 x 7.90149.20 x 70.60 x 8.40
Weight (g)156.20150.00172.00
Battery capacity (mAh)320032603000
Removable batteryNoNo-
Fast chargingProprietary--
ColoursBlack, GoldPearl Black, GoldBlack, Orchid Grey, Gold, Blue
SAR value-1.38-
display
Screen size (inches)6.286.305.60
TouchscreenYesYesYes
Resolution1080x2280 pixels1080x2280 pixels1080x2220 pixels
Aspect ratio19:919:9-
hardware
Processor2.2GHz octa-core2.2GHz octa-core1.6GHz octa-core
Processor makeQualcomm Snapdragon 660Snapdragon 626-
RAM6GB4GB4GB
Internal storage128GB64GB32GB
Expandable storageYesYesYes
Expandable storage typemicroSDmicroSDmicroSD
Expandable storage up to (GB)256256256
camera
Rear camera12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)16-megapixel (f/2.0) + 5-megapixel16-megapixel
Rear autofocusPhase detection autofocusPhase detection autofocus-
Rear flashLEDDual LEDLED
Front camera12-megapixel (f/2.0)24-megapixel (f/2.0)16-megapixel
software
Operating systemAndroid 8.1Android 8.1Android 7.1.1
SkinFunTouch 4.0FunTouch OS 4.0-
connectivity
Wi-FiYesYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac-802.11 a/b/g/n/ac
GPSYesYesYes
BluetoothYes, v 5.00Yes, v 4.20Yes, v 5.00
NFCNo-Yes
InfraredNo--
USB OTGYesYes-
Micro-USBYesYes-
Headphones3.5mm3.5mm3.5mm
FMNoYes-
Number of SIMs22-
sim 1
SIM TypeNano-SIMNano-SIM-
GSM/CDMAGSMGSM-
3GYesYes-
4G/ LTEYesYes-
sim 2
SIM TypeNano-SIMNano-SIM-
GSM/CDMAGSMGSM-
3GYesYes-
4G/ LTEYesYes-
sensors
Fingerprint sensorYesYes-
Compass/ MagnetometerYesYesYes
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYesYes-
GyroscopeYesYesYes
Face unlock-Yes-
Barometer--Yes
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