Realme X3 vs Vivo X21 comparison

Compare Realme X3
Compare Vivo X21s
key specs
Display6.60-inch6.41-inch
ProcessorQualcomm Snapdragon 855+Qualcomm Snapdragon 660
Front Camera16-megapixel + 8-megapixel 24.8-megapixel
Rear Camera64-megapixel + 8-megapixel + 12-megapixel + 2-megapixel 12-megapixel + 5-megapixel
RAM6GB6GB
Storage128GB128GB
Battery Capacity4200mAh3400mAh
OSAndroid 10Android 8.1 Oreo
Resolution1080x2400 pixels1080x2340 pixels
general
BrandRealmeVivo
ModelX3X21s
Release dateJune 25, 2020November 1, 2018
Launched in IndiaYes-
Form factorTouchscreenTouchscreen
Dimensions (mm)163.80 x 75.80 x 8.90157.91 x 75.08 x 7.90
Weight (g)202.00156.00
Battery capacity (mAh)42003400
Removable batteryNo-
Fast chargingProprietary-
ColoursArctic White, Glacier BlueStarry Night Black
display
Screen size (inches)6.606.41
TouchscreenYesYes
Resolution1080x2400 pixels1080x2340 pixels
Protection typeGorilla Glass-
Aspect ratio20:919.5:9
hardware
Processorocta-coreocta-core
Processor makeQualcomm Snapdragon 855+Qualcomm Snapdragon 660
RAM6GB6GB
Internal storage128GB128GB
Expandable storageNoYes
Expandable storage type-microSD
Expandable storage up to (GB)-256
camera
Rear camera64-megapixel (f/1.8) + 8-megapixel (f/2.3) + 12-megapixel (f/2.5) + 2-megapixel (f/2.4)12-megapixel + 5-megapixel
Rear autofocusYesYes
Rear flashYes-
Front camera16-megapixel (f/2.0) + 8-megapixel (f/2.2)24.8-megapixel
software
Operating systemAndroid 10Android 8.1 Oreo
SkinRealme UI-
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac-
GPSYesYes
BluetoothYes, v 5.00Yes
USB Type-CYes-
Number of SIMs22
Micro-USB-Yes
Headphones-3.5mm
sim 1
SIM TypeNano-SIM-
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sim 2
SIM TypeNano-SIM-
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sensors
Face unlockYesYes
Fingerprint sensorYesYes
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYesYes

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