vivo X21 vs Xiaomi Mi A3 Specs Comparison

Availability

Officially announced
	Jul 17, 2019

Design

Dimensions
6.08 x 2.94 x 0.29 inches 154.45 x 74.78 x 7.37 mm	6.04 x 2.83 x 0.33 inches 153.48 x 71.85 x 8.475 mm
Weight
5.51 oz / 156.2 g	6.13 oz / 173.8 g
Materials
Back: Aluminum Frame: Aluminum	Back: Glass (Corning Gorilla Glass 5) Frame: Plastic
Biometrics
2D Face unlock, Optical in-screen fingerprint	2D Face unlock, Optical in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Back: Volume control, Lock/Unlock key
Colors
Black	Gray, Blue, White

Display

Size
6.3-inch, 85.36% screen-to-body	6.1-inch, 82.56% screen-to-body
Type
Super AMOLED	Super AMOLED
Resolution
2280x1080px, 402 PPI	1560x720px, 19.5:9 ratio, 282 PPI
Protection
	Corning Gorilla Glass 5

Hardware

System chip
Snapdragon 660 SDM660 (14 nm)	Snapdragon 665 (11 nm)
Processor
Octa-core 2200 MHz Kryo 260	Octa-core 2000 MHz Kryo 260
GPU
Adreno 512	Adreno 610
Memory
6GB (LPDDR4)/128GB	4GB (LPDDR4)/128GB 4GB/64GB
Storage expansion
microSDXC up to 256 GB	microSDXC up to 256 GB
OS
Android (8.1 Oreo)	Android (11, 10, 9.0 Pie)

Battery

Type
3200 mAh, Li - Ion	4030 mAh
Charging
Fast charging	Qualcomm Quick Charge 3.0

Camera

Rear
Dual camera	Triple camera
Main camera
12 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2.8" Pixel size: 1.28 μm	48 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2.3" Pixel size: 0.8 μm
Second camera
5 MP (Depth information) Aperture size: F2.4	8 MP (Ultra-wide) Aperture size: F2.2 Pixel size: 1.12 μm
Third camera
	2 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
1080p (30 fps) Time-lapse video, Video calling, Video sharing	4K UHD (30 fps), 1080p (120 fps), 720p (240 fps) EIS, Video calling, Video sharing
Front
12 MP Video capture: 1080p	32 MP Video capture: 1080p

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
microUSB, USB 2.0	Type-C
Sensors
Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass	GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Other
VoIP, Tethering, Computer sync, OTA sync	Infrared, VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Album art cover, Background playback	Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM	FM
Additional microphone(s)
Noise cancellation	Noise cancellation

Cellular

4G (FDD) Bands
1, 3, 5	1, 2, 3, 4, 5, 7, 8, 20, 28
4G (TDD) Bands
40, 41	38, 40
3G Bands
5, 8, 1	5, 8, 4, 2, 1
Data Speed
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

Measured SAR
Head: 1.18 W/kg Body: 0.57 W/kg

Alternative variants

with 64 GB storage

Memory	64GB

Discover more

Full Specs vivo X21 Specs

Full Specs Xiaomi Mi A3 Specs