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Vivo X Fold 6 vs Vivo X21 UD comparison

 Compare Vivo X Fold 6
Vivo X Fold 6
Compare Vivo X21 UD
Vivo X21 UD
key specs
Display (Primary)6.51-inch-
Cover Display8.02-inch-
Cover Resolution2504x2312 pixels-
ProcessorMediaTek Dimensity 9500 SuperQualcomm Snapdragon 660
Front Camera20-megapixel + 20-megapixel 12-megapixel
Rear Camera200-megapixel + 50-megapixel + 50-megapixel 12-megapixel
RAM12GB6GB
Storage256GB128GB
Battery Capacity7000mAh3200mAh
OSAndroid 16Android 8.1
Resolution1120x2528 pixels1080x2280 pixels
Display-6.28-inch
general
BrandVivoVivo
ModelX Fold 6X21 UD
Release dateJune 26, 2026March 1, 2018
AI EnabledYes-
Launched in IndiaNo-
Form factorFoldableTouchscreen
Body typeMetal-
Dimensions (mm)157.16 x 145.66 x 4.40154.50 x 74.80 x 7.40
Weight (g)228.00156.20
IP ratingIP59-
Battery capacity (mAh)70003200
Removable batteryNo-
Fast charging80W Fast Charging-
Wireless chargingYes-
Wireless Charging Type40W-
ColoursBlue Hole, Polar Night, and Salt LakeRuby Red, Aurora White, Black
display
Refresh Rate120 Hz-
Resolution StandardFHD+-
Screen size (inches)6.516.28
TouchscreenYesYes
Resolution1120x2528 pixels1080x2280 pixels
Protection typeOther-
Pixels per inch (PPI)424-
second display
Screen size (inches)8.02-
TouchscreenYes-
Resolution2504x2312 pixels-
Pixels per inch (PPI)424-
hardware
Processorocta-coreocta-core
Processor makeMediaTek Dimensity 9500 SuperQualcomm Snapdragon 660
RAM12GB6GB
Internal storage256GB128GB
Expandable storageNo-
camera
Rear camera200-megapixel (f/1.68) + 50-megapixel (f/2.05) + 50-megapixel (f/2.57)12-megapixel
No. of Rear Cameras3-
Rear autofocusYes-
Rear flashYesLED
Front camera20-megapixel (f/2.4) + 20-megapixel (f/2.4)12-megapixel
No. of Front Cameras2-
Pop-Up CameraNo-
Front autofocusYes-
Front flashNo-
software
Operating systemAndroid 16Android 8.1
SkinOriginOS 6 FoldFunTouch 4.0
connectivity
Wi-Fi 7Yes-
GPSYesYes
BluetoothYes, v 5.40Yes, v 5.00
USB Type-CYes-
Number of SIMs22
Wi-Fi-Yes
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
5GYes-
3G-Yes
sim 2
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSM + CDMAGSM
4G/ LTEYesYes
5GYes-
3G-Yes
sensors
Face unlockYes-
Fingerprint sensorYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYes-
Ambient light sensorYesYes
GyroscopeYesYes
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