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Realme C21 vs Oppo A1k comparison

 Compare Realme C21
Realme C21
Compare Oppo A1k
Oppo A1k
ratings
Overall NDTV RatingRead ReviewRead Review
Design Rating
Display Rating
Software Rating
Performance Rating
Battery Life Rating
Camera Rating
Value for Money Rating
key specs
Display6.50-inch6.10-inch
ProcessorMediaTek Helio G35MediaTek Helio P22
Front Camera5-megapixel 5-megapixel
Rear Camera13-megapixel + 2-megapixel + 2-megapixel 8-megapixel
RAM3GB, 4GB2GB
Storage32GB, 64GB32GB
Battery Capacity5000mAh4000mAh
OSAndroid 10Android Pie
Resolution720x1600 pixels720x1560 pixels
general
BrandRealmeOppo
ModelC21A1k
Release dateApril 8, 2021April 1, 2019
Launched in IndiaYes-
Dimensions (mm)165.20 x 76.40 x 8.90154.50 x 73.80 x 8.40
Weight (g)190.00170.00
Battery capacity (mAh)50004000
ColoursCross Black, Cross BlueBlack, Red
Form factor-Touchscreen
Body type-Plastic
display
Screen size (inches)6.506.10
TouchscreenYesYes
Resolution720x1600 pixels720x1560 pixels
Protection type-Gorilla Glass
Pixels per inch (PPI)-282
hardware
Processorocta-coreocta-core
Processor makeMediaTek Helio G35MediaTek Helio P22 (MT6762)
RAM3GB, 4GB2GB
Internal storage32GB, 64GB32GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)256-
Dedicated microSD slotYes-
camera
Rear camera13-megapixel (f/2.2) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)8-megapixel (f/2.2, 1.4-micron)
No. of Rear Cameras3-
Front camera5-megapixel (f/2.2)5-megapixel (f/2.0, 1.12-micron)
No. of Front Cameras1-
Rear flash-LED
software
Operating systemAndroid 10Android Pie
SkinRealme UIColorOS 6.0
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 b/g/n-
GPSYes-
BluetoothYes, v 5.00Yes, v 4.20
Micro-USBYesYes
Headphones3.5mm3.5mm
Number of SIMs22
sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSM-
3GYes-
4G/ LTEYes-
sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSM-
3GYes-
4G/ LTEYes-
sensors
Fingerprint sensorYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes

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