OnePlus 15 vs Karbonn KT21 comparison

Compare OnePlus 15
Compare Karbonn KT21
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
Display6.78-inch2.80-inch
ProcessorSnapdragon 8 Elite Gen 5one-core
Front Camera32-megapixelNo
Rear Camera50-megapixel + 50-megapixel + 50-megapixel 3.2-megapixel
RAM12GB, 16GB-
Storage256GB, 512GB-
Battery Capacity7,300mAh1000mAh
OSAndroid 16Proprietary
Resolution1,272x2,772 pixels-
general
BrandOnePlusKarbonn
Model15KT21
Release dateOctober 27, 2025March 1, 2012
Launched in IndiaYes-
Form factorTouchscreenBar
Dimensions (mm)161.42 x 76.67 x 8.10-
Weight (g)211.00-
IP ratingIP69-
Battery capacity (mAh)7,3001000
Removable batteryNoYes
Fast charging120W FlashCharge-
Wireless chargingYes-
Wireless Charging Type50W-
ColoursInfinite Black, Sand Storm, and Ultra VioletBlack
display
Refresh Rate165 Hz-
Resolution Standard1.5K-
Screen size (inches)6.782.80
TouchscreenYesYes
Resolution1,272x2,772 pixels-
Pixels per inch (PPI)450-
hardware
Processorocta-coreone-core
Processor makeSnapdragon 8 Elite Gen 5-
RAM12GB, 16GB-
Internal storage256GB, 512GB-
Expandable storage-Yes
Expandable storage type-microSD
Expandable storage up to (GB)-32
camera
Rear camera50-megapixel (f/1.8) + 50-megapixel (f/2.0) + 50-megapixel (f/1.8)3.2-megapixel
No. of Rear Cameras3-
Front camera32-megapixelNo
No. of Front Cameras1-
Pop-Up CameraNo-
Rear flash-Yes
software
Operating systemAndroid 16Proprietary
SkinOxygenOS 16-
connectivity
Wi-Fi 7Yes-
Wi-FiYesNo
GPSYesNo
BluetoothYesYes
NFCYesNo
USB Type-CYes-
Infrared-No
USB OTG-No
Headphones-3.5mm
FM-Yes
Number of SIMs-2
Wi-Fi Direct-No
Mobile High-Definition Link (MHL)-No
sensors
In-Display Fingerprint SensorYes-
Compass/ MagnetometerYesNo
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesNo
GyroscopeYesNo
BarometerYesNo
Temperature sensorYesNo
sim 1
SIM Type-Regular
GSM/CDMA-GSM
3G-No
4G/ LTE-No
sim 2
SIM Type-Regular
GSM/CDMA-GSM
3G-No
4G/ LTE-No

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