Vivo X100 vs Vivo X21 UD comparison

Show Only Differences Highlight Differences	Vivo X100	Vivo X21 UD
key specs
Display	6.78-inch	6.28-inch
Processor	MediaTek Dimensity 9300	Qualcomm Snapdragon 660
Front Camera	32-megapixel	12-megapixel
Rear Camera	50-megapixel + 50-megapixel + 50-megapixel	12-megapixel
RAM	12GB, 16GB	6GB
Storage	256GB, 512GB	128GB
Battery Capacity	5000mAh	3200mAh
OS	Android 14	Android 8.1
Resolution	1260x2800 pixels	1080x2280 pixels
general
Brand	Vivo	Vivo
Model	X100	X21 UD
Release date	November 13, 2023	March 1, 2018
Launched in India	Yes	-
Form factor	Touchscreen	Touchscreen
Dimensions (mm)	164.05 x 75.00 x 8.49	154.50 x 74.80 x 7.40
Weight (g)	205.00	156.20
IP rating	IP68	-
Battery capacity (mAh)	5000	3200
Fast charging	Proprietary	-
Colours	Asteroid Black, Stargaze Blue	Ruby Red, Aurora White, Black
display
Refresh Rate	120 Hz	-
Screen size (inches)	6.78	6.28
Touchscreen	Yes	Yes
Resolution	1260x2800 pixels	1080x2280 pixels
Aspect ratio	20:9	-
hardware
Processor	octa-core	octa-core
Processor make	MediaTek Dimensity 9300	Qualcomm Snapdragon 660
RAM	12GB, 16GB	6GB
Internal storage	256GB, 512GB	128GB
camera
Rear camera	50-megapixel + 50-megapixel + 50-megapixel	12-megapixel
No. of Rear Cameras	3	-
Front camera	32-megapixel	12-megapixel
No. of Front Cameras	1	-
Rear flash	-	LED
software
Operating system	Android 14	Android 8.1
Skin	OriginOS 4	FunTouch 4.0
connectivity
Wi-Fi	Yes	Yes
Wi-Fi standards supported	802.11 a/b/g/n/ac/ax	802.11 a/b/g/n/ac
GPS	Yes	Yes
Bluetooth	Yes	Yes, v 5.00
NFC	Yes	-
USB OTG	Yes	Yes
USB Type-C	Yes	-
Active 4G on both SIM cards	Yes	-
Headphones	-	3.5mm
Number of SIMs	-	2
sensors
In-Display Fingerprint Sensor	Yes	-
Compass/ Magnetometer	Yes	Yes
Proximity sensor	Yes	Yes
Accelerometer	Yes	-
Ambient light sensor	Yes	Yes
Gyroscope	Yes	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