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Realme C21Y vs Celkon Millennia Octa510 comparison

 Compare Realme C21Y
Realme C21Y
Compare Celkon Millennia Octa510
Celkon Millennia Octa510
key specs
Display6.50-inch5.00-inch
ProcessorUnisoc T610MediaTek MT6592M
Front Camera5-megapixel 3.2-megapixel
Rear Camera13-megapixel + 2-megapixel + 2-megapixel 8-megapixel
RAM3GB, 4GB1GB
Storage32GB, 64GB8GB
Battery Capacity5000mAh2000mAh
OSAndroid 11Android 4.4
Resolution720x1600 pixels720x1280 pixels
general
BrandRealmeCelkon
ModelC21YMillennia Octa510
Release dateJuly 14, 2021January 1, 2015
Launched in IndiaYes-
Form factorTouchscreenTouchscreen
Dimensions (mm)164.50 x 76.00 x 9.10143.50 x 71.90 x 9.10
Weight (g)200.00136.00
Battery capacity (mAh)50002000
Fast chargingProprietary-
ColoursCross Black, Cross BlueBlack
Removable battery-Yes
display
Screen size (inches)6.505.00
TouchscreenYesYes
Resolution720x1600 pixels720x1280 pixels
Aspect ratio20:9-
hardware
Processorocta-core1.4GHz octa-core
Processor makeUnisoc T610MediaTek MT6592M
RAM3GB, 4GB1GB
Internal storage32GB, 64GB8GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)25632
Dedicated microSD slotYes-
camera
Rear camera13-megapixel (f/2.2) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)8-megapixel
No. of Rear Cameras3-
Rear autofocusYes-
Rear flashYesLED
Front camera5-megapixel (f/2.4)3.2-megapixel
No. of Front Cameras1-
software
Operating systemAndroid 11Android 4.4
SkinRealme UI-
connectivity
Wi-FiYesYes
GPSYesYes
BluetoothYes, v 5.00Yes
Micro-USBYes-
Headphones3.5mm3.5mm
Number of SIMs22
NFC-No
Infrared-No
USB OTG-No
FM-Yes
Wi-Fi Direct-No
Mobile High-Definition Link (MHL)-No
sim 1
SIM TypeNano-SIMRegular
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesNo
sim 2
SIM TypeNano-SIMRegular
GSM/CDMAGSMGSM
3GYesNo
4G/ LTEYesNo
sensors
Fingerprint sensorYes-
Compass/ MagnetometerYesNo
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
Gyroscope-Yes
Barometer-No
Temperature sensor-No

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