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Vivo X21s vs Vivo X21i vs Vivo X21 UD
Vivo X21s
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Vivo X21i
vs
Vivo X21 UD
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Vivo X21s
Vivo X21i
Vivo X21 UD
key specs
Display
6.41-inch
6.28-inch
6.28-inch
Processor
Qualcomm Snapdragon 660
MediaTek Helio P60
Qualcomm Snapdragon 660
Front Camera
24.8-megapixel
24-megapixel
12-megapixel
Rear Camera
12-megapixel + 5-megapixel
12-megapixel
12-megapixel
RAM
6GB
4GB
6GB
Storage
128GB
64GB
128GB
Battery Capacity
3400mAh
3245mAh
3200mAh
OS
Android 8.1 Oreo
Android 8.1
Android 8.1
Resolution
1080x2340 pixels
1080x2280 pixels
1080x2280 pixels
general
Brand
Vivo
Vivo
Vivo
Model
X21s
X21i
X21 UD
Release date
November 1, 2018
May 1, 2018
March 1, 2018
Form factor
Touchscreen
Touchscreen
Touchscreen
Dimensions (mm)
157.91 x 75.08 x 7.90
154.37 x 74.98 x 6.99
154.50 x 74.80 x 7.40
Weight (g)
156.00
159.00
156.20
Battery capacity (mAh)
3400
3245
3200
Colours
Starry Night Black
Aurora White, Polar Night, Ruby Red
Ruby Red, Aurora White, Black
display
Screen size (inches)
6.41
6.28
6.28
Touchscreen
Yes
Yes
Yes
Resolution
1080x2340 pixels
1080x2280 pixels
1080x2280 pixels
Aspect ratio
19.5:9
-
-
hardware
Processor
octa-core
2GHz octa-core
octa-core
Processor make
Qualcomm Snapdragon 660
MediaTek Helio P60 (MT6771)
Qualcomm Snapdragon 660
RAM
6GB
4GB
6GB
Internal storage
128GB
64GB
128GB
Expandable storage
Yes
Yes
-
Expandable storage type
microSD
microSD
-
Expandable storage up to (GB)
256
256
-
camera
Rear camera
12-megapixel + 5-megapixel
12-megapixel
12-megapixel
Rear autofocus
Yes
-
-
Front camera
24.8-megapixel
24-megapixel
12-megapixel
Rear flash
-
Dual LED
LED
software
Operating system
Android 8.1 Oreo
Android 8.1
Android 8.1
Skin
-
Funtouch OS 4
FunTouch 4.0
connectivity
Wi-Fi
Yes
Yes
Yes
GPS
Yes
Yes
Yes
Bluetooth
Yes
Yes
Yes, v 5.00
Micro-USB
Yes
-
-
Headphones
3.5mm
-
3.5mm
Number of SIMs
2
2
2
Wi-Fi standards supported
-
802.11 b/g/n
802.11 a/b/g/n/ac
USB OTG
-
Yes
Yes
FM
-
Yes
-
sim 1
GSM/CDMA
GSM
GSM
GSM
3G
Yes
Yes
Yes
4G/ LTE
Yes
Yes
Yes
SIM Type
-
Nano-SIM
Micro-SIM
sim 2
GSM/CDMA
GSM
GSM
GSM
3G
Yes
Yes
Yes
4G/ LTE
Yes
Yes
Yes
SIM Type
-
Nano-SIM
Micro-SIM
sensors
Face unlock
Yes
-
-
Fingerprint sensor
Yes
-
-
Compass/ Magnetometer
Yes
-
Yes
Proximity sensor
Yes
Yes
Yes
Accelerometer
Yes
Yes
-
Ambient light sensor
Yes
Yes
Yes
Gyroscope
Yes
Yes
Yes
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