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Vivo U3 vs Vivo X21 comparison

 Compare Vivo U3
Vivo U3
Compare Vivo X21
Vivo X21
key specs
Display6.53-inch6.28-inch
ProcessorQualcomm Snapdragon 675Qualcomm Snapdragon 660
Front Camera16-megapixel 12-megapixel
Rear Camera16-megapixel + 8-megapixel + 2-megapixel 12-megapixel + 5-megapixel
RAM4GB6GB
Storage128GB128GB
Battery Capacity5000mAh3200mAh
OSAndroid 9 PieAndroid 8.1
Resolution1080x2340 pixels1080x2280 pixels
general
BrandVivoVivo
ModelU3X21
Release dateOctober 21, 2019March 1, 2018
Launched in IndiaNoYes
Form factorTouchscreenTouchscreen
Dimensions (mm)162.15 x 76.47 x 8.89154.50 x 74.80 x 7.40
Weight (g)193.00156.20
Battery capacity (mAh)50003200
Removable batteryNoNo
Fast chargingProprietaryProprietary
Wireless chargingNo-
ColoursSpar Blue, Agate Black, Onion BlueBlack, Gold
display
Screen size (inches)6.536.28
TouchscreenYesYes
Resolution1080x2340 pixels1080x2280 pixels
Aspect ratio19.5:919:9
Pixels per inch (PPI)394-
hardware
Processorocta-core2.2GHz octa-core
Processor makeQualcomm Snapdragon 675Qualcomm Snapdragon 660
RAM4GB6GB
Internal storage128GB128GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)-256
camera
Rear camera16-megapixel (f/1.78) + 8-megapixel (f/2.2) + 2-megapixel (f/2.4)12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)
Rear autofocusYesPhase detection autofocus
Rear flashYesLED
Front camera16-megapixel (f/2.0)12-megapixel (f/2.0)
software
Operating systemAndroid 9 PieAndroid 8.1
SkinFuntouch OS 9FunTouch 4.0
connectivity
Wi-FiYesYes
GPSYesYes
BluetoothYesYes, v 5.00
Micro-USBYesYes
Headphones3.5mm3.5mm
Number of SIMs22
Active 4G on both SIM cardsYes-
Wi-Fi standards supported-802.11 a/b/g/n/ac
NFC-No
Infrared-No
USB OTG-Yes
FM-No
sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sensors
Face unlockYes-
Fingerprint sensorYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
Compass/ Magnetometer-Yes
Gyroscope-Yes
ratings
Overall NDTV Rating-Read Review
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-

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