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Realme C21Y vs Asus ZenFone 4 Selfie DC (ZD553KL) comparison

 Compare Realme C21Y
Realme C21Y
Compare Asus ZenFone 4 Selfie DC (ZD553KL)
Asus ZenFone 4 Selfie DC (ZD553KL)
key specs
Display6.50-inch5.50-inch
ProcessorUnisoc T610Qualcomm Snapdragon 430
Front Camera5-megapixel 20-megapixel
Rear Camera13-megapixel + 2-megapixel + 2-megapixel 16-megapixel
RAM3GB, 4GB4GB
Storage32GB, 64GB64GB
Battery Capacity5000mAh3000mAh
OSAndroid 11Android 7.1.1
Resolution720x1600 pixels720x1280 pixels
general
BrandRealmeAsus
ModelC21YZenFone 4 Selfie DC (ZD553KL)
Release dateJuly 14, 2021August 1, 2017
Launched in IndiaYes-
Form factorTouchscreenTouchscreen
Dimensions (mm)164.50 x 76.00 x 9.10155.66 x 75.90 x 7.85
Weight (g)200.00144.00
Battery capacity (mAh)50003000
Fast chargingProprietary-
ColoursCross Black, Cross BlueSunlight Gold, Rouge Red, Deepsea Black
Removable battery-No
display
Screen size (inches)6.505.50
TouchscreenYesYes
Resolution720x1600 pixels720x1280 pixels
Aspect ratio20:9-
hardware
Processorocta-core1.4GHz octa-core
Processor makeUnisoc T610Qualcomm Snapdragon 430
RAM3GB, 4GB4GB
Internal storage32GB, 64GB64GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)256128
Dedicated microSD slotYes-
camera
Rear camera13-megapixel (f/2.2) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)16-megapixel
No. of Rear Cameras3-
Rear autofocusYes-
Rear flashYesDual LED
Front camera5-megapixel (f/2.4)20-megapixel
No. of Front Cameras1-
Front flash-Yes
software
Operating systemAndroid 11Android 7.1.1
SkinRealme UIZenUI 4.0
connectivity
Wi-FiYesYes
GPSYesYes
BluetoothYes, v 5.00Yes, v 4.10
Micro-USBYes-
Headphones3.5mm3.5mm
Number of SIMs22
Wi-Fi standards supported-802.11 b/g/n
NFC-No
Infrared-No
USB OTG-Yes
FM-No
Wi-Fi Direct-No
Mobile High-Definition Link (MHL)-No
sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sensors
Fingerprint sensorYes-
Compass/ MagnetometerYesNo
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
Gyroscope-Yes
Barometer-No
Temperature sensor-No

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