Oppo K9x vs Oppo A91 comparison

Show Only Differences Highlight Differences	Oppo K9x	Oppo A91
key specs
Display	6.50-inch	6.40-inch
Front Camera	16-megapixel	Unspecified
Rear Camera	64-megapixel + 2-megapixel + 2-megapixel	48-megapixel + 8-megapixel
RAM	6GB, 8GB	8GB
Storage	128GB, 256GB	128GB
Battery Capacity	5000mAh	4000mAh
OS	Android 11	Android 9
Resolution	1080x2400 pixels	1080x2400 pixels
Processor	-	octa-core
general
Brand	Oppo	Oppo
Model	K9x	A91
Release date	December 23, 2021	December 20, 2019
Launched in India	No	-
Form factor	Touchscreen	Touchscreen
Battery capacity (mAh)	5000	4000
Fast charging	VOOC	VOOC
Colours	Black, Silver Purple	Black, Blue, Red
Removable battery	-	No
display
Refresh Rate	90 Hz	-
Screen size (inches)	6.50	6.40
Touchscreen	Yes	Yes
Resolution	1080x2400 pixels	1080x2400 pixels
Protection type	-	Gorilla Glass
hardware
Processor make	MediaTek Dimensity 810	-
RAM	6GB, 8GB	8GB
Internal storage	128GB, 256GB	128GB
Processor	-	octa-core
camera
Rear camera	64-megapixel + 2-megapixel + 2-megapixel	48-megapixel + 8-megapixel
No. of Rear Cameras	3	-
Front camera	16-megapixel	Unspecified
No. of Front Cameras	1	-
Pop-Up Camera	No	-
Rear autofocus	-	Yes
Rear flash	-	Yes
Front flash	-	No
software
Operating system	Android 11	Android 9
Skin	ColorOS	ColorOS
connectivity
Wi-Fi	Yes	Yes
GPS	Yes	Yes
Bluetooth	Yes	Yes
NFC	No	-
Wi-Fi standards supported	-	802.11 a/b/g/n
Active 4G on both SIM cards	-	Yes
sensors
Fingerprint sensor	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	Yes
Ambient light sensor	Yes	Yes
Compass/ Magnetometer	-	Yes

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