Xiaomi Mi A3 vs Samsung Galaxy M21 Specs Comparison

Availability

Officially announced
Jul 17, 2019	Mar 18, 2020

Design

Dimensions
6.04 x 2.83 x 0.33 inches 153.48 x 71.85 x 8.475 mm	6.26 x 2.96 x 0.35 inches 159.0 x 75.1 x 8.9 mm
Weight
6.13 oz / 173.8 g	6.63 oz / 188.0 g
Materials
Back: Glass (Corning Gorilla Glass 5) Frame: Plastic	Back: Plastic Frame: Plastic
Biometrics
2D Face unlock, Optical in-screen fingerprint	2D Face unlock, Fingerprint (touch)
Keys
Back: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Gray, Blue, White	Midnight blue, Raven black

Display

Size
6.1-inch, 82.56% screen-to-body	6.4-inch, 84.11% screen-to-body
Type
Super AMOLED	Super AMOLED, 420 nits
Resolution
1560x720px, 19.5:9 ratio, 282 PPI	2340x1080px, 19.5:9 ratio, 403 PPI
Protection
Corning Gorilla Glass 5	Corning Gorilla Glass 3
Features
	Scratch-resistant glass, Proximity sensor

Hardware

System chip
Snapdragon 665 (11 nm)	Exynos 9611 (10 nm)
Processor
Octa-core 2000 MHz Kryo 260	Octa-core 4x2.3GHz Cortex-A73 4x1.7G​Hz Cortex-A53
GPU
Adreno 610	Mali-G72 MP3
Memory
4GB (LPDDR4)/128GB 4GB/64GB	4GB (LPDDR4)/64GB 6GB/128GB
Storage expansion
microSDXC up to 256 GB	microSDXC up to 512 GB
OS
Android (11, 10, 9.0 Pie)	Android (11, 10)

Battery

Type
4030 mAh	6000 mAh, Li - Polymer
Charging
Qualcomm Quick Charge 3.0	Fast charging

Camera

Rear
Triple camera	Triple camera
Main camera
48 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2.3" Pixel size: 0.8 μm	48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
8 MP (Ultra-wide) Aperture size: F2.2 Pixel size: 1.12 μm	8 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 12 mm Sensor size: 1/4" Pixel size: 1.12 μm
Third camera
2 MP (Depth information) Aperture size: F2.4	5 MP (Depth information) Aperture size: F2.2
Flash
LED	LED
Video recording
4K UHD (30 fps), 1080p (120 fps), 720p (240 fps) EIS, Video calling, Video sharing	4K UHD (30 fps), 1080p, 720p (240 fps) EIS
Front
32 MP Video capture: 1080p	20 MP (HDR) 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
Type-C	Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Proximity sensor
Location
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
Infrared, VoIP, Tethering, Computer sync, OTA sync

Discover more

Full Specs Xiaomi Mi A3 Specs

Full Specs Samsung Galaxy M21 Specs

Multimedia

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

Cellular

4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 20, 28	1, 3, 5, 7, 8, 20
4G (TDD) Bands
38, 40	38, 40, 41
3G Bands
5, 8, 4, 2, 1	1, 2, 5, 8
Data Speed
LTE-A Cat 9 (450/50 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

Alternative variants

with 64 GB storage

Memory	64GB

with 128GB storage

Memory	6GB/128GB