vivo X21 vs Xiaomi Poco X3 Pro Specs Comparison

Availability

Officially announced
	Mar 22, 2021
Prices (MSRP)
	€249

Design

Dimensions
6.08 x 2.94 x 0.29 inches 154.45 x 74.78 x 7.37 mm	6.51 x 3.02 x 0.37 inches 165.3 x 76.8 x 9.4 mm
Weight
5.51 oz / 156.2 g	7.58 oz / 215.0 g
Materials
Back: Aluminum Frame: Aluminum
Resistance
	Splash, Dust; IP53
Biometrics
2D Face unlock, Optical in-screen fingerprint	2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Left: Volume control, Lock/Unlock key
Colors
Black	Phantom black, Frost blue, Metal bronze

Display

Size
6.3-inch, 85.36% screen-to-body	6.7-inch, 84.68% screen-to-body
Type
Super AMOLED	IPS LCD, 120Hz, HDR
Resolution
2280x1080px, 402 PPI	2400x1080px, 20:9 ratio, 395 PPI
Protection
	Corning Gorilla Glass 6

Hardware

System chip
Snapdragon 660 SDM660 (14 nm)	Snapdragon 860 SM8150-AC (7 nm)
Processor
Octa-core 2200 MHz Kryo 260	Octa-core 2960 MHz Kryo 485
GPU
Adreno 512	Adreno 640
Memory
6GB (LPDDR4)/128GB	6GB (LPDDR4)/128GB (UFS 3.1) 8GB/256GB
Storage expansion
microSDXC up to 256 GB	microSDXC up to 1024 GB
OS
Android (8.1 Oreo)	Android (11)

Battery

Type
3200 mAh, Li - Ion	5160 mAh
Charging
Fast charging
Charge speed
	Wired: 33.0W

Camera

Rear
Dual camera	Quad 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" Pixel size: 0.8 μm
Second camera
5 MP (Depth information) Aperture size: F2.4	8 MP (Ultra-wide) Aperture size: F2.2
Third camera
	2 MP (Macro) Aperture size: F2.4
Fourth 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 (60 fps), 720p (30 fps)
Front
12 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 MIMO, 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, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
VoIP, Tethering, Computer sync, OTA sync	NFC, Infrared

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share
Radio
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, 41
3G Bands
5, 8, 1	1, 2, 4, 5, 8
Data Speed
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
	Date approved: Feb 01, 2021 FCC ID value: 2AFZZJ20SG
Measured SAR
Head: 1.18 W/kg Body: 0.57 W/kg	Head: 0.81 W/kg Body: 0.67 W/kg Simultaneous Transmission: 1.57 W/kg Wireless Router: 0.78 W/kg

Alternative variants

with 256GB storage

Memory	8GB/256GB
Prices (MSRP)	€299

Links

Full specifications
vivo X21 Specs	Xiaomi Poco X3 Pro Specs