OPPO K13x 5G vs Lava Z91 comparison

Show Only Differences Highlight Differences	OPPO K13x 5G	Lava Z91
ratings
Overall NDTV Rating	Read Review	-
Design Rating		-
Display Rating		-
Software Rating		-
Performance Rating		-
Battery Life Rating		-
Camera Rating		-
Value for Money Rating		-
key specs
Display	6.67-inch	5.70-inch
Processor	MediaTek Dimensity 6300	MediaTek MT6739
Front Camera	8-megapixel	8-megapixel
Rear Camera	50-megapixel + 2-megapixel	13-megapixel
RAM	4GB, 6GB, 8GB	3GB
Storage	128GB	32GB
Battery Capacity	6000mAh	3000mAh
OS	Android 15	Android 7.1 Nougat
Resolution	720x1604 pixels	720x1440 pixels
general
Brand	OPPO	Lava
Model	K13x 5G	Z91
Release date	June 23, 2025	March 1, 2018
AI Enabled	Yes	-
Launched in India	Yes	-
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	165.70 x 76.24 x 7.99	-
Weight (g)	194.00	-
IP rating	IP65	-
Battery capacity (mAh)	6000	3000
Fast charging	45W Fast Charging	-
Colours	Midnight Violet, Sunset Peach	-
display
Refresh Rate	120 Hz	-
Resolution Standard	HD+	-
Screen size (inches)	6.67	5.70
Touchscreen	Yes	Yes
Resolution	720x1604 pixels	720x1440 pixels
hardware
Processor	octa-core	1.3GHz quad-core
Processor make	MediaTek Dimensity 6300	MediaTek MT6739
RAM	4GB, 6GB, 8GB	3GB
Internal storage	128GB	32GB
Expandable storage	-	Yes
Expandable storage up to (GB)	-	128
camera
Rear camera	50-megapixel (f/1.8) + 2-megapixel (f/2.4)	13-megapixel
No. of Rear Cameras	2	-
Rear flash	Yes	Yes
Front camera	8-megapixel (f/2.0)	8-megapixel
No. of Front Cameras	1	-
Front flash	-	Yes
software
Operating system	Android 15	Android 7.1 Nougat
Skin	ColorOS 15	Star OS 4.2
connectivity
Wi-Fi	Yes	-
Wi-Fi standards supported	802.11 a/b/g/n/ac	-
GPS	Yes	-
Bluetooth	Yes, v 5.40	-
NFC	Yes	-
USB Type-C	Yes	-
Headphones	3.5mm	-
Number of SIMs	2	2
Active 4G on both SIM cards	Yes	-

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