Oppo F31 5G vs Oppo K9x comparison

Compare Oppo F31 5G
Compare Oppo K9x
key specs
Display6.50-inch6.50-inch
ProcessorMediaTek Dimensity 6300-
Front Camera16-megapixel 16-megapixel
Rear Camera50-megapixel + 2-megapixel 64-megapixel + 2-megapixel + 2-megapixel
RAM8GB6GB, 8GB
Storage128GB, 256GB128GB, 256GB
Battery Capacity7000mAh5000mAh
OSAndroid 15Android 11
Resolution1080x2372 pixels1080x2400 pixels
general
BrandOppoOppo
ModelF31 5GK9x
Release dateSeptember 15, 2025December 23, 2021
AI EnabledYes-
Launched in IndiaYesNo
Dimensions (mm)185.20 x 75.00 x 8.00-
Weight (g)185.00-
Battery capacity (mAh)70005000
Removable batteryNo-
Fast charging80W Fast ChargingVOOC
Wireless chargingNo-
ColoursCloud Green, Midnight Blue, Bloom RedBlack, Silver Purple
Form factor-Touchscreen
display
Refresh Rate120 Hz90 Hz
Screen size (inches)6.506.50
TouchscreenYesYes
Resolution1080x2372 pixels1080x2400 pixels
Pixels per inch (PPI)397-
hardware
Processorocta-core-
Processor makeMediaTek Dimensity 6300MediaTek Dimensity 810
RAM8GB6GB, 8GB
Internal storage128GB, 256GB128GB, 256GB
Expandable storageNo-
Expandable storage typeNo-
Dedicated microSD slotNo-
camera
Rear camera50-megapixel (f/1.8) + 2-megapixel (f/2.4)64-megapixel + 2-megapixel + 2-megapixel
No. of Rear Cameras23
Rear autofocusYes-
No. of Front Cameras11
Front camera16-megapixel (f/2.4)16-megapixel
Pop-Up Camera-No
software
Operating systemAndroid 15Android 11
SkinColorOS 15ColorOS
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac-
GPSYesYes
BluetoothYes, v 5.40Yes
NFCYesNo
USB Type-CYes-
Number of SIMs2-
Active 4G on both SIM cardsYes-
sim 1
SIM TypeNano-SIM-
GSM/CDMAGSM-
3GYes-
4G/ LTEYes-
5GYes-
sim 2
SIM TypeNano-SIM-
GSM/CDMAGSM-
3GYes-
4G/ LTEYes-
5GYes-
sensors
In-Display Fingerprint SensorYes-
Compass/ MagnetometerYes-
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYes-
Fingerprint sensor-Yes

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