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Vivo X21 vs Samsung Galaxy Note 8 vs Asus ZenFone Zoom S comparison

 Compare Vivo X21
Vivo X21
Compare Samsung Galaxy Note 8
Samsung Galaxy Note 8
Compare Asus ZenFone Zoom S
Asus ZenFone Zoom S
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
Display6.28-inch6.30-inch5.50-inch
ProcessorQualcomm Snapdragon 660Samsung Exynos 8895Qualcomm Snapdragon 625
Front Camera12-megapixel 8-megapixel 13-megapixel
Rear Camera12-megapixel + 5-megapixel 12-megapixel + 12-megapixel 12-megapixel
RAM6GB6GB4GB
Storage128GB64GB64GB
Battery Capacity3200mAh3300mAh5000mAh
OSAndroid 8.1Android 7.1.1Android 7.1.1
Resolution1080x2280 pixels1440x2960 pixels1080x1920 pixels
general
BrandVivoSamsungAsus
ModelX21Galaxy Note 8ZenFone Zoom S
Release dateMarch 1, 2018August 1, 2017August 1, 2017
Launched in IndiaYesYes-
Form factorTouchscreenTouchscreenTouchscreen
Dimensions (mm)154.50 x 74.80 x 7.40162.50 x 74.80 x 8.60154.30 x 77.00 x 7.99
Weight (g)156.20195.00170.00
Battery capacity (mAh)320033005000
Removable batteryNoNoNo
Fast chargingProprietaryQuick Charge 2.0-
ColoursBlack, GoldMidnight Black, Orchid GrayNavy Black, Glacier Silver
SAR value-0.221.16
Alternate names--ZE553KL
display
Screen size (inches)6.286.305.50
TouchscreenYesYesYes
Resolution1080x2280 pixels1440x2960 pixels1080x1920 pixels
Aspect ratio19:918.5:9-
Protection type-Gorilla Glass-
hardware
Processor2.2GHz octa-coreocta-core (4x2.3GHz + 4x1.7GHz)2GHz octa-core
Processor makeQualcomm Snapdragon 660Samsung Exynos 8895Qualcomm Snapdragon 625
RAM6GB6GB4GB
Internal storage128GB64GB64GB
Expandable storageYesYesYes
Expandable storage typemicroSDmicroSDmicroSD
Expandable storage up to (GB)2562562000
camera
Rear camera12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)12-megapixel (f/1.7, 1.4-micron) + 12-megapixel (f/2.4, 1.0-micron)12-megapixel
Rear autofocusPhase detection autofocusPhase detection autofocus-
Rear flashLEDLEDDual LED
Front camera12-megapixel (f/2.0)8-megapixel (f/1.7, 1.22-micron)13-megapixel
Front autofocus-Yes-
software
Operating systemAndroid 8.1Android 7.1.1Android 7.1.1
SkinFunTouch 4.0Samsung Experience 8.5ZenUI 3.0
connectivity
Wi-FiYesYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 a/b/g/n/ac802.11 b/g/n
GPSYesYesYes
BluetoothYes, v 5.00Yes, v 5.00Yes, v 4.20
NFCNoYesNo
InfraredNoNoNo
USB OTGYesYesYes
Micro-USBYes--
Headphones3.5mmYes3.5mm
FMNoNoYes
Number of SIMs222
USB Type-C-Yes-
Wi-Fi Direct-NoYes
Mobile High-Definition Link (MHL)-NoNo
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 sensorYesYes-
Compass/ MagnetometerYesYesYes
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYesYesYes
GyroscopeYesYesYes
Barometer-YesNo
Temperature sensor-NoNo
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