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OnePlus N6x vs Vivo X21 UD comparison

 Compare OnePlus N6x
OnePlus N6x
Compare Vivo X21 UD
Vivo X21 UD
key specs
Display6.80-inch6.28-inch
ProcessorMediaTek Dimensity 6360 MaxQualcomm Snapdragon 660
Front Camera5-megapixel 12-megapixel
Rear Camera13-megapixel 12-megapixel
RAM4GB6GB
Storage64GB, 128GB128GB
Battery Capacity7000mAh3200mAh
OSAndroid 16Android 8.1
Resolution720x1570 pixels1080x2280 pixels
general
BrandOnePlusVivo
ModelN6xX21 UD
Release dateJuly 31, 2026March 1, 2018
AI EnabledYes-
Launched in IndiaYes-
Form factorTouchscreenTouchscreen
Body typePolycarbonate-
Dimensions (mm)166.38 x 78.13 x 8.65154.50 x 74.80 x 7.40
Weight (g)214.00156.20
Battery capacity (mAh)70003200
Removable batteryNo-
Fast charging15W Fast Charging-
Wireless chargingNo-
ColoursBurgundy Red and Ice BlueRuby Red, Aurora White, Black
display
Refresh Rate120 Hz-
Resolution StandardHD+-
Screen size (inches)6.806.28
TouchscreenYesYes
Resolution720x1570 pixels1080x2280 pixels
Aspect ratio19.5:9-
Pixels per inch (PPI)254-
hardware
Processorocta-coreocta-core
Processor makeMediaTek Dimensity 6360 MaxQualcomm Snapdragon 660
RAM4GB6GB
Internal storage64GB, 128GB128GB
Expandable storageNo-
camera
Rear camera13-megapixel (f/2.2)12-megapixel
No. of Rear Cameras1-
Rear autofocusYes-
Rear flashYesLED
Front camera5-megapixel (f/2.2)12-megapixel
No. of Front Cameras1-
Pop-Up CameraNo-
Front autofocusNo-
Front flashNo-
software
Operating systemAndroid 16Android 8.1
SkinOxygenOS 16FunTouch 4.0
connectivity
Wi-FiYesYes
GPSYesYes
BluetoothYesYes, v 5.00
Number of SIMs22
Active 4G on both SIM cardsYes-
Wi-Fi standards supported-802.11 a/b/g/n/ac
USB OTG-Yes
Headphones-3.5mm
sim 1
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSM + CDMAGSM
4G/ LTEYesYes
3G-Yes
sim 2
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSM + CDMAGSM
4G/ LTEYesYes
3G-Yes
sensors
Face unlockYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYes-
Ambient light sensorYesYes
GyroscopeYesYes
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