Vivo Y31 5G vs Oppo K9s comparison

Show Only Differences Highlight Differences	Vivo Y31 5G	Oppo K9s
key specs
Display	6.68-inch	6.59-inch
Processor	Qualcomm Snapdragon 4 Gen 2	-
Front Camera	8-megapixel	16-megapixel
Rear Camera	50-megapixel + 0.08-megapixel	64-megapixel + 8-megapixel + 2-megapixel
RAM	4GB, 6GB	6GB, 8GB
Storage	128GB	128GB, 256GB
Battery Capacity	6,500mAh	4880mAh
OS	Android 15	Android 11
Resolution	1,608x720 pixels	1080x2412 pixels
general
Brand	Vivo	Oppo
Model	Y31 5G	K9s
Release date	September 15, 2025	October 20, 2021
Launched in India	Yes	No
Form factor	Touchscreen	Touchscreen
Body type	Plastic	-
Dimensions (mm)	166.14 x 77.01 x 8.39	164.43 x 75.88 x 8.52
Weight (g)	209.00	199.00
IP rating	IP68	-
Battery capacity (mAh)	6,500	4880
Removable battery	No	-
Fast charging	44W Flash Charge	-
Wireless charging	No	-
Colours	Rose Red and Diamond Green	Magic Purple Quicksand, Neon Silver Sea, and Obsidian Warrior (translated)
display
Refresh Rate	120 Hz	120 Hz
Screen size (inches)	6.68	6.59
Touchscreen	Yes	Yes
Resolution	1,608x720 pixels	1080x2412 pixels
Pixels per inch (PPI)	264	401
hardware
Processor	2.2GHz MHz octa-core	-
Processor make	Qualcomm Snapdragon 4 Gen 2	Qualcomm Snapdragon 778G
RAM	4GB, 6GB	6GB, 8GB
Internal storage	128GB	128GB, 256GB
Expandable storage	Yes	Yes
Expandable storage type	microSD	microSD
Expandable storage up to (GB)	2TB	-
camera
Rear camera	50-megapixel (f/f/1.8) + 0.08-megapixel (f/f/3.0)	64-megapixel (f/1.7) + 8-megapixel (f/2.2) + 2-megapixel (f/2.4)
No. of Rear Cameras	2	3
Rear flash	Yes	-
Front camera	8-megapixel (f/f/2.0)	16-megapixel (f/2.0)
No. of Front Cameras	1	1
Pop-Up Camera	No	-
software
Operating system	Android 15	Android 11
Skin	Funtouch OS 15	ColorOS 11.2
connectivity
Wi-Fi	Yes	Yes
GPS	Yes	Yes
Bluetooth	Yes, v 4.20	Yes, v 5.20
NFC	No	-
USB Type-C	Yes	Yes
Number of SIMs	2	2
Wi-Fi standards supported	-	802.11 a/b/g/n/ac/ax
USB OTG	-	Yes
sim 1
SIM Type	Nano-SIM	Nano-SIM
GSM/CDMA	GSM	-
4G/ LTE	Yes	-
5G	Yes	-
sim 2
SIM Type	Nano-SIM	Nano-SIM
GSM/CDMA	GSM	-
4G/ LTE	Yes	-
5G	Yes	-
sensors
Fingerprint sensor	Yes	Yes
Compass/ Magnetometer	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	Yes
Ambient light sensor	Yes	Yes
Gyroscope	No	Yes
Barometer	No	-
Temperature sensor	No	-

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