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Vivo Z1 vs Xiaomi Mi A2 vs Vivo X21 comparison

 Compare Vivo Z1
Vivo Z1
Compare Xiaomi Mi A2
Xiaomi Mi A2
Compare Vivo X21
Vivo X21
key specs
Display6.26-inch5.99-inch6.28-inch
ProcessorQualcomm Snapdragon 660Qualcomm Snapdragon 660Qualcomm Snapdragon 660
Front Camera12-megapixel20-megapixel 12-megapixel
Rear Camera13-megapixel12-megapixel + 20-megapixel 12-megapixel + 5-megapixel
RAM4GB4GB6GB
Storage16GB64GB128GB
Battery Capacity3260mAh3000mAh3200mAh
OSAndroid 8.1 OreoAndroid 8.1 OreoAndroid 8.1
Resolution1080x2280 pixels1080x2160 pixels1080x2280 pixels
general
BrandVivoXiaomiVivo
ModelZ1Mi A2X21
Release dateApril 1, 2018July 1, 2018March 1, 2018
Form factorTouchscreenTouchscreenTouchscreen
Dimensions (mm)154.81 x 75.03 x 7.89158.70 x 75.40 x 7.30154.50 x 74.80 x 7.40
Weight (g)149.30168.00156.20
Battery capacity (mAh)326030003200
Removable batteryNoNoNo
ColoursPorcelain Glaze Black, Hyun Screen Red, and Sapphire BlueBlack, Gold, Lake Blue, Rose GoldBlack, Gold
Launched in India-YesYes
Fast charging--Proprietary
display
Screen size (inches)6.265.996.28
TouchscreenYesYesYes
Resolution1080x2280 pixels1080x2160 pixels1080x2280 pixels
Aspect ratio-18:919:9
Pixels per inch (PPI)-403-
hardware
Processor2.2GHz octa-coreocta-core (4x2.2GHz + 4x1.8GHz)2.2GHz octa-core
Processor makeQualcomm Snapdragon 660Qualcomm Snapdragon 660Qualcomm Snapdragon 660
RAM4GB4GB6GB
Internal storage16GB64GB128GB
Expandable storageYesNoYes
Expandable storage typemicroSDmicroSDmicroSD
Expandable storage up to (GB)256-256
camera
Rear camera13-megapixel12-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)
Rear flashLEDDual LEDLED
Front camera12-megapixel20-megapixel (f/2.2, 1.0-micron)12-megapixel (f/2.0)
Rear autofocus-Phase detection autofocusPhase detection autofocus
Front flash-LED-
software
Operating systemAndroid 8.1 OreoAndroid 8.1 OreoAndroid 8.1
SkinFunTouch OS-FunTouch 4.0
connectivity
Wi-FiYesYesYes
Wi-Fi standards supported802.11 b/g/n802.11 a/b/g/n/ac802.11 a/b/g/n/ac
GPSYesYesYes
BluetoothYesYes, v 5.00Yes, v 5.00
USB OTGYesYesYes
Number of SIMs222
NFC-YesNo
Headphones-No3.5mm
Wi-Fi Direct-Yes-
Infrared--No
Micro-USB--Yes
FM--No
sensors
Compass/ MagnetometerYesYesYes
Proximity sensorYesYesYes
AccelerometerYesYesYes
GyroscopeYesYesYes
Fingerprint sensor-YesYes
Ambient light sensor-YesYes
ratings
Overall NDTV Rating-Read ReviewRead Review
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
sim 1
SIM Type-Nano-SIMNano-SIM
GSM/CDMA-GSMGSM
3G-YesYes
4G/ LTE-YesYes
sim 2
SIM Type-Nano-SIMNano-SIM
GSM/CDMA-GSMGSM
3G-YesYes
4G/ LTE-YesYes
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