Xiaomi Mi 9 SE vs Xiaomi Mi A3 Specs Comparison

Display

Size
6.0-inch	6.1-inch
Resolution
2340 x 1080 px, 19.5:9 ratio, 432 PPI	1560 x 720 px, 19.5:9 ratio, 282 PPI
Technology
AMOLED	Super AMOLED
Screen-to-body
83.96 %	82.56 %
Colors
16 777 216
Peak brightness
600 cd/m2 (nit)
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass), Ambient light sensor, Proximity sensor	Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 712 SDM712 (10 nm)	Qualcomm Snapdragon 665 (11 nm)
Processor
Octa-core, 2300 MHz, Kryo 360, 64-bit	Octa-core, 2000 MHz, Kryo 260, 64-bit
GPU
Adreno 616	Adreno 610
RAM
6GB (LPDDR4)	4GB (LPDDR4)
Internal storage
128GB	128GB
Storage expansion
	microSDXC up to 256 GB
OS
Android (9.0 Pie)	Android (11, 10, 9.0 Pie)
Device type
Smartphone	Smartphone

Battery

Capacity
3070 mAh	4030 mAh
Type
Not user replaceable	Not user replaceable
Charging
	Qualcomm Quick Charge 3.0

Camera

Rear
Triple camera	Triple camera
Main camera
48 MP (PDAF) Specifications: Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	48 MP (PDAF) Specifications: Aperture size: F1.8 Sensor size: 1/2.3" Pixel size: 0.8 μm
Second camera
13 MP (Ultra-wide, PDAF) Specifications: Aperture size: F2.4 Sensor size: 1/3.06" Pixel size: 1.12 μm	8 MP (Ultra-wide) Specifications: Aperture size: F2.2 Pixel size: 1.12 μm
Third camera
8 MP (Telephoto, Autofocus) Specifications: Aperture size: F2.4 Sensor size: 1/4" Pixel size: 1.12 μm	2 MP (Depth information) Specifications: Aperture size: F2.4
Flash
LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (960 fps) Features: EIS, Video calling, Video sharing	3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps) Features: EIS, Video calling, Video sharing
Front
20 MP (HDR)	32 MP, Video capture: 1920x1080 (Full HD)

Design

Dimensions
5.81 x 2.78 x 0.29 inches (147.5 x 70.5 x 7.45 mm)	6.04 x 2.83 x 0.33 inches (153.48 x 71.85 x 8.475 mm)
Weight
5.47 oz(155.0 g)	6.13 oz(173.8 g)
Materials
	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, Purple, Blue	Gray, Blue, White

Cellular

4G (FDD)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+)	Bands 38(2600), 40(2300)
3G
Bands 5(850), 8(900), 2(1900), 1(2100)	Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Data Speed
LTE-A, HSPA, HSUPA	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
VoLTE
Yes

Multimedia

Headphones
No 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
Additional microphone(s)
	Noise cancellation

Connectivity & Features

Bluetooth
5.0	5.0
Wi-Fi
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 (reversible), USB 2.0, Features: Mass storage device, Charging, Headphones port	Type-C (reversible), Features: Charging, Mass storage device
Location
GPS, A-GPS, Glonass, Galileo, BeiDou	GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass	Accelerometer, Gyroscope, Compass
Other
NFC, Infrared, VoIP, Tethering, Computer sync, OTA sync	Infrared, VoIP, Tethering, Computer sync, OTA sync

Buyers information

In The Box
	10W charger, USB Type-C cable, SIM eject tool, User guide, Soft case, Warranty card

Availability

Officially announced
Feb 20, 2019	Jul 17, 2019

Alternative variants

with 64 GB storage

Internal storage	64GB

Links

Full specifications
Xiaomi Mi 9 SE Specs	Xiaomi Mi A3 Specs