Xiaomi Mi A2 vs Xiaomi Redmi Note 9S Specs Comparison

Design

Dimensions
6.25 x 2.97 x 0.29 inches 158.7 x 75.4 x 7.3 mm	6.53 x 3.02 x 0.35 inches 165.75 x 76.68 x 8.8 mm
Weight
5.93 oz (168.0 g)	7.37 oz (209.0 g)
Materials
Back: Aluminum	Back: Glass (Corning Gorilla Glass 5)
Biometrics
Fingerprint (touch)	Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Pink, Blue, Red	Interstellar grey, Aurora blue, Glacier white

Display

Size
6.0-inch	6.7-inch
Resolution
2160x1080px, 18:9 ratio, 403 PPI	2400x1080px, 20:9 ratio, 395 PPI
Technology
IPS LCD	IPS LCD
Screen-to-body
77.32 %	84.42 %
Features
Scratch-resistant glass (Corning Gorilla Glass 5), ShatterShield, Ambient light sensor, Proximity sensor	HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 660 SDM660 (14 nm)	Qualcomm Snapdragon 720G SM7125 (8 nm)
Processor
Octa-core 2200 MHz Kryo 260	Octa-core 2300 MHz Kryo 465
GPU
Adreno 512	Adreno 618
Memory
6GB (LPDDR4)/128GB	4GB (LPDDR4)/64GB
Storage expansion
	microSDXC up to 512 GB
OS
Android (10, 8.1 Oreo)	Android (11, 10)

Battery

Type
3010 mAh, Li - Polymer	5020 mAh, Li - Polymer
Charging
Qualcomm Quick Charge 3.0	Fast charging

Camera

Rear
Dual camera	Quad camera
Main camera
12 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2.9" Pixel size: 1.25 μm	48 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
20 MP Aperture size: F1.8 Sensor size: 1/2.8" Pixel size: 1 μm	8 MP (Ultra-wide) Aperture size: F2.2 Pixel size: 1.12 μm
Third camera
	5 MP (Macro, Autofocus) Aperture size: F2.4 Pixel size: 1.12 μm
Fourth camera
	2 MP (Depth information) Aperture size: F2.4 Pixel size: 1.75 μm
Flash
LED	Dual LED
Video recording
4K UHD (30 fps), 1080p (30 fps), 720p (120 fps) Video calling, Video sharing	4K UHD (30 fps), 1080p (120 fps), 720p (960 fps)
Front
20 MP (Flash, HDR) Video capture: 1080p	16 MP (HDR, Slow-motion videos) Video capture: 1080p

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0	Type-C
Location
GPS, A-GPS, Glonass, BeiDou	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)	Accelerometer, Gyroscope, Compass
Other
Infrared, VoIP, Tethering, Computer sync, OTA sync	Infrared

Multimedia

Headphones
No 3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
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, 2, 3, 4, 5, 7, 8, 20
4G (TDD)
Bands 38, 40	Bands 38, 40
3G
Bands 5, 8, 3, 2	Bands 5, 8, 4, 2, 1
Data Speed
LTE-A, HSPA, HSUPA	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM
VoLTE
	Yes

Buyers information

MSRP
	$ 249
In The Box
Power adapter, USB cable, SIM eject too, Type-C to Audio adapter, User guide, Clear soft case	22.5W Wire charger, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card

Availability

Officially announced
Jul 24, 2018	Mar 23, 2020

Alternative variants

with 32 GB of storage

Memory	4GB/32GB

with 128GB storage

Memory	6GB/128GB
MSRP	$ 279

with 64 GB of storage

Memory	4GB/64GB

Links

Full specifications
Xiaomi Mi A2 Specs	Xiaomi Redmi Note 9S Specs
PhoneArena Review
Xiaomi Mi A2 Review
User Reviews
Xiaomi Mi A2 User Reviews