Vivo Y6k vs Vivo X21 UD comparison

Show Only Differences Highlight Differences	Vivo Y6k	Vivo X21 UD
key specs
Display	6.74-inch	6.28-inch
Processor	MediaTek Dimensity 6300	Qualcomm Snapdragon 660
Front Camera	5-megapixel	12-megapixel
Rear Camera	13-megapixel	12-megapixel
RAM	6GB	6GB
Storage	128GB	128GB
Battery Capacity	6500mAh	3200mAh
OS	Android 16	Android 8.1
Resolution	720x1600 pixels	1080x2280 pixels
general
Brand	Vivo	Vivo
Model	Y6k	X21 UD
Release date	November 7, 2026	March 1, 2018
AI Enabled	Yes	-
Launched in India	No	-
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	167.40 x 77.10 x 8.39	154.50 x 74.80 x 7.40
Weight (g)	209.00	156.20
IP rating	IP65	-
Battery capacity (mAh)	6500	3200
Removable battery	No	-
Fast charging	Proprietary	-
Colours	black, blue, white	Ruby Red, Aurora White, Black
display
Refresh Rate	120 Hz	-
Resolution Standard	HD+	-
Screen size (inches)	6.74	6.28
Touchscreen	Yes	Yes
Resolution	720x1600 pixels	1080x2280 pixels
hardware
Processor	octa-core	octa-core
Processor make	MediaTek Dimensity 6300	Qualcomm Snapdragon 660
RAM	6GB	6GB
Internal storage	128GB	128GB
camera
Rear camera	13-megapixel (f/2.2)	12-megapixel
Front camera	5-megapixel (f/2.2)	12-megapixel
No. of Front Cameras	1	-
Rear flash	-	LED
software
Operating system	Android 16	Android 8.1
Skin	OriginOS 6	FunTouch 4.0
connectivity
Wi-Fi	Yes	Yes
GPS	Yes	Yes
Bluetooth	Yes, v 5.40	Yes, v 5.00
NFC	No	-
Headphones	3.5mm	3.5mm
Number of SIMs	2	2
Active 4G on both SIM cards	Yes	-
Wi-Fi standards supported	-	802.11 a/b/g/n/ac
USB OTG	-	Yes
sensors
Fingerprint sensor	Yes	-
Compass/ Magnetometer	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	-
Ambient light sensor	Yes	Yes
Gyroscope	-	Yes
sim 1
SIM Type	-	Micro-SIM
GSM/CDMA	-	GSM
3G	-	Yes
4G/ LTE	-	Yes
sim 2
SIM Type	-	Micro-SIM
GSM/CDMA	-	GSM
3G	-	Yes
4G/ LTE	-	Yes

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