Vivo Y31 5G vs Oppo K9x comparison

Compare Vivo Y31 5G
Compare Oppo K9x
key specs
Display6.68-inch6.50-inch
ProcessorQualcomm Snapdragon 4 Gen 2-
Front Camera8-megapixel 16-megapixel
Rear Camera50-megapixel + 0.08-megapixel 64-megapixel + 2-megapixel + 2-megapixel
RAM4GB, 6GB6GB, 8GB
Storage128GB128GB, 256GB
Battery Capacity6,500mAh5000mAh
OSAndroid 15Android 11
Resolution1,608x720 pixels1080x2400 pixels
general
BrandVivoOppo
ModelY31 5GK9x
Release dateSeptember 15, 2025December 23, 2021
Launched in IndiaYesNo
Form factorTouchscreenTouchscreen
Body typePlastic-
Dimensions (mm)166.14 x 77.01 x 8.39-
Weight (g)209.00-
IP ratingIP68-
Battery capacity (mAh)6,5005000
Removable batteryNo-
Fast charging44W Flash ChargeVOOC
Wireless chargingNo-
ColoursRose Red and Diamond GreenBlack, Silver Purple
display
Refresh Rate120 Hz90 Hz
Screen size (inches)6.686.50
TouchscreenYesYes
Resolution1,608x720 pixels1080x2400 pixels
Pixels per inch (PPI)264-
hardware
Processor2.2GHz MHz octa-core-
Processor makeQualcomm Snapdragon 4 Gen 2MediaTek Dimensity 810
RAM4GB, 6GB6GB, 8GB
Internal storage128GB128GB, 256GB
Expandable storageYes-
Expandable storage typemicroSD-
Expandable storage up to (GB)2TB-
camera
Rear camera50-megapixel (f/f/1.8) + 0.08-megapixel (f/f/3.0)64-megapixel + 2-megapixel + 2-megapixel
No. of Rear Cameras23
Rear flashYes-
Front camera8-megapixel (f/f/2.0)16-megapixel
No. of Front Cameras11
Pop-Up CameraNoNo
software
Operating systemAndroid 15Android 11
SkinFuntouch OS 15ColorOS
connectivity
Wi-FiYesYes
GPSYesYes
BluetoothYes, v 4.20Yes
NFCNoNo
USB Type-CYes-
Number of SIMs2-
sim 1
SIM TypeNano-SIM-
GSM/CDMAGSM-
4G/ LTEYes-
5GYes-
sim 2
SIM TypeNano-SIM-
GSM/CDMAGSM-
4G/ LTEYes-
5GYes-
sensors
Fingerprint sensorYesYes
Compass/ MagnetometerYes-
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeNo-
BarometerNo-
Temperature sensorNo-

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