Xiaomi Mi A2 vs Xiaomi Mi 9 Specs Comparison

Design

Dimensions
6.25 x 2.97 x 0.29 inches 158.7 x 75.4 x 7.3 mm	6.20 x 2.94 x 0.30 inches 157.5 x 74.67 x 7.61 mm
Weight
5.93 oz (168.0 g)	6.10 oz (173.0 g)
Materials
Back: Aluminum	Back: Glass (Corning Gorilla Glass 5) Frame: Metal
Biometrics
Fingerprint (touch)	Optical in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Pink, Blue, Red	Black, Purple, Blue

Display

Size
6.0-inch	6.4-inch
Resolution
2160x1080px, 18:9 ratio, 403 PPI	2340x1080px, 19.5:9 ratio, 403 PPI
Technology
IPS LCD	AMOLED
Screen-to-body
77.32 %	85.23 %
Peak brightness
	600 cd/m2 (nit)
Features
Scratch-resistant glass (Corning Gorilla Glass 5), ShatterShield, Ambient light sensor, Proximity sensor	HDR support, Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 660 SDM660 (14 nm)	Qualcomm Snapdragon 855 (7 nm)
Processor
Octa-core 2200 MHz Kryo 260	Octa-core 2840 MHz Kryo 485
GPU
Adreno 512	Adreno 640
RAM
6GB (LPDDR4)	6GB (LPDDR4)
Internal storage
128GB	128GB
Storage expansion
	not expandable
OS
Android (10, 8.1 Oreo)	Android (9.0 Pie), Xiaomi MI UI

Battery

Capacity
3010 mAh	3300 mAh
Type
Li - Polymer
Charging
Qualcomm Quick Charge 3.0	Qualcomm Quick Charge 4+, Qi wireless charging

Camera

Rear
Dual camera	Triple camera
Main camera
12 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2.9" Pixel size: 1.25 μm	48 MP (Sapphire crystal lens cover, Laser and PDAF, CMOS image sensor) Aperture size: F1.8 Focal length: 26 mm 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	12 MP (Telephoto, Sapphire crystal lens cover, PDAF) Optical zoom: 2.0x Aperture size: F2.2 Focal Length: 50 mm Sensor size: 1/3.4" Pixel size: 1 μm
Third camera
	16 MP (Ultra-wide, Sapphire crystal lens cover, PDAF) Aperture size: F2.2 Focal Length: 17 mm Sensor size: 1/3" Pixel size: 1 μm
Flash
LED	Dual LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps) Video calling, Video sharing	3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (960 fps), 1280x720 (HD) (960 fps) Continuous autofocus, EIS, Video calling, Video sharing
Front
20 MP (Flash, HDR), Video capture: 1920x1080 (Full HD)	20 MP (HDR), Video capture: 1920x1080 (Full HD)

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 MIMO, Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0	Type-C, USB 2.0
Location
GPS, A-GPS, Glonass, BeiDou	GPS, A-GPS, Glonass, Galileo, BeiDou
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)	Accelerometer, Gyroscope, Compass
Other
Infrared, VoIP, Tethering, Computer sync, OTA sync	NFC, Infrared, VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
No 3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Album art cover, Background playback	aptX-HD
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 38(2600), 40(2300)	Bands 38(2600), 39(1900+), 40(2300)
3G
Bands 5(850), 8(900), 3(1800), 2(1900)	Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Data Speed
LTE-A, HSPA, HSUPA	LTE-A, HSPA, HSUPA
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM
HD Voice
	Yes
VoLTE
	Yes

Phone Features

Notifications
	Haptic feedback, Music ringtones, Vibration
Other features
	Voice dialing, Voice commands, Voice recording

Buyers information

In The Box
Power adapter, USB cable, SIM eject too, Type-C to Audio adapter, User guide, Clear soft case	Case, 18W Charger, USB Type-C cable, Type-c to 3.5 mm adapter, SIM removal tool, Documentation

Availability

Officially announced
Jul 24, 2018	Feb 20, 2019

Alternative variants

with 32 GB of storage

RAM	4GB
Internal storage	32GB

with 64 GB storage

Internal storage	64GB

with 64 GB of storage

RAM	4GB
Internal storage	64GB

Explorer Edition

RAM	12GB
Internal storage	256GB

Links

Full specifications
Xiaomi Mi A2 Specs	Xiaomi Mi 9 Specs
PhoneArena Review
Xiaomi Mi A2 Review	Xiaomi Mi 9 Review
User Reviews
Xiaomi Mi A2 User Reviews