Vivo S15 vs Vivo X21 UD comparison

Compare Vivo S15
Compare Vivo X21 UD
key specs
Display6.62-inch6.28-inch
ProcessorQualcomm Snapdragon 870Qualcomm Snapdragon 660
Front Camera32-megapixel 12-megapixel
Rear Camera64-megapixel + 8-megapixel + 2-megapixel 12-megapixel
RAM8GB, 12GB6GB
Storage128GB, 256GB128GB
Battery Capacity4500mAh3200mAh
OSAndroid 12Android 8.1
Resolution1080x2400 pixels1080x2280 pixels
general
BrandVivoVivo
ModelS15X21 UD
Release dateMay 19, 2022March 1, 2018
Launched in IndiaNo-
Form factorTouchscreenTouchscreen
Dimensions (mm)161.09 x 74.31 x 7.99154.50 x 74.80 x 7.40
Weight (g)197.00156.20
Battery capacity (mAh)45003200
Fast chargingProprietary-
Colours-Ruby Red, Aurora White, Black
display
Refresh Rate120 Hz-
Resolution StandardFHD+-
Screen size (inches)6.626.28
TouchscreenYesYes
Resolution1080x2400 pixels1080x2280 pixels
Aspect ratio20:9-
hardware
Processorocta-coreocta-core
Processor makeQualcomm Snapdragon 870Qualcomm Snapdragon 660
RAM8GB, 12GB6GB
Internal storage128GB, 256GB128GB
camera
Rear camera64-megapixel (f/1.89) + 8-megapixel (f/2.2) + 2-megapixel (f/2.4)12-megapixel
No. of Rear Cameras3-
Rear autofocusYes-
Rear flashYesLED
Front camera32-megapixel (f/2.0)12-megapixel
No. of Front Cameras1-
software
Operating systemAndroid 12Android 8.1
SkinOriginOS OceanFunTouch 4.0
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac/ax802.11 a/b/g/n/ac
GPSYesYes
BluetoothYes, v 5.20Yes, v 5.00
NFCYes-
USB Type-CYes-
Number of SIMs22
USB OTG-Yes
Headphones-3.5mm
sim 1
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
5GYes-
sim 2
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
5GYes-
sensors
In-Display Fingerprint SensorYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYes-
Ambient light sensorYesYes
GyroscopeYesYes

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