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Vivo U3 vs Vivo X21 UD
Vivo U3
vs
Vivo X21 UD
comparison
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Vivo U3
Vivo X21 UD
key specs
Display
6.53-inch
6.28-inch
Processor
Qualcomm Snapdragon 675
Qualcomm Snapdragon 660
Front Camera
16-megapixel
12-megapixel
Rear Camera
16-megapixel + 8-megapixel + 2-megapixel
12-megapixel
RAM
4GB
6GB
Storage
128GB
128GB
Battery Capacity
5000mAh
3200mAh
OS
Android 9 Pie
Android 8.1
Resolution
1080x2340 pixels
1080x2280 pixels
general
Brand
Vivo
Vivo
Model
U3
X21 UD
Release date
October 21, 2019
March 1, 2018
Launched in India
No
-
Form factor
Touchscreen
Touchscreen
Dimensions (mm)
162.15 x 76.47 x 8.89
154.50 x 74.80 x 7.40
Weight (g)
193.00
156.20
Battery capacity (mAh)
5000
3200
Removable battery
No
-
Fast charging
Proprietary
-
Wireless charging
No
-
Colours
Spar Blue, Agate Black, Onion Blue
Ruby Red, Aurora White, Black
display
Screen size (inches)
6.53
6.28
Touchscreen
Yes
Yes
Resolution
1080x2340 pixels
1080x2280 pixels
Aspect ratio
19.5:9
-
Pixels per inch (PPI)
394
-
hardware
Processor
octa-core
octa-core
Processor make
Qualcomm Snapdragon 675
Qualcomm Snapdragon 660
RAM
4GB
6GB
Internal storage
128GB
128GB
Expandable storage
Yes
-
Expandable storage type
microSD
-
camera
Rear camera
16-megapixel (f/1.78) + 8-megapixel (f/2.2) + 2-megapixel (f/2.4)
12-megapixel
Rear autofocus
Yes
-
Rear flash
Yes
LED
Front camera
16-megapixel (f/2.0)
12-megapixel
software
Operating system
Android 9 Pie
Android 8.1
Skin
Funtouch OS 9
FunTouch 4.0
connectivity
Wi-Fi
Yes
Yes
GPS
Yes
Yes
Bluetooth
Yes
Yes, v 5.00
Micro-USB
Yes
-
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
sim 1
SIM Type
Nano-SIM
Micro-SIM
GSM/CDMA
GSM
GSM
3G
Yes
Yes
4G/ LTE
Yes
Yes
sim 2
SIM Type
Nano-SIM
Micro-SIM
GSM/CDMA
GSM
GSM
3G
Yes
Yes
4G/ LTE
Yes
Yes
sensors
Face unlock
Yes
-
Fingerprint sensor
Yes
-
Proximity sensor
Yes
Yes
Accelerometer
Yes
-
Ambient light sensor
Yes
Yes
Compass/ Magnetometer
-
Yes
Gyroscope
-
Yes
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