Xiaomi Mi 9 vs Xiaomi Mi A3
Display
Display size
Resolution
Pixel density
Technology
AMOLED
Super AMOLED
Screen-to-body ratio
85.23 %
82.56 %
Features
HDR video support, Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Camera
Rear
Triple camera
Triple camera
Main camera
Hardware Features
Sapphire crystal lens cover, Laser and Phase detection autofocus, CMOS image sensor
Phase detection autofocus
Specifications
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.8; Sensor size: 1/2.3"; Pixel size: 0.8 μm
Second camera
12 megapixels
8 megapixels
Hardware Features
Telephoto, Sapphire crystal lens cover, Phase detection autofocus
Ultra-wide
Specifications
Optical zoom: 2x; Aperture size: F2.2; Focal Length: 50 mm; Sensor size: 1/3.4"; Pixel size: 1 μm
Aperture size: F2.2; Pixel size: 1.12 μm
Third camera
16 megapixels
2 megapixels
Hardware Features
Ultra-wide, Sapphire crystal lens cover, Phase detection autofocus
Depth information
Specifications
Aperture size: F2.2; Focal Length: 17 mm; Sensor size: 1/3"; Pixel size: 1 μm
Aperture size: F2.4
Video recording
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (960 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
Features
Continuous autofocus, Digital image stabilization, Video calling, Video sharing
Digital image stabilization, Video calling, Video sharing
Front
20 megapixels
32 megapixels
Features
High Dynamic Range mode (HDR)
Design
Dimensions
Weight
the average is 6.1 oz (174 g)
the average is 6.1 oz (174 g)
Materials
Back: Glass (Corning Gorilla Glass 5); Frame: Metal
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Biometrics
In-screen fingerprint
2D Face unlock, In-screen fingerprint
Colors
Black, Purple, Blue
Gray, Blue, White
Multimedia
Headphones
USB Type-C (reversible)
3.5 mm jack
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features
aptX-HD
Album art cover, Background playback
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
Additional microphone(s)
for Noise cancellation
Hardware & Performance
System chip
Qualcomm Snapdragon 855
Qualcomm Snapdragon 665
Processor
GPU
Adreno 640
Adreno 610
RAM
Internal storage
128 GB, not expandable
128 GB
Storage expansion
microSDXC up to 256 GB
OS
Android (9.0 Pie), Xiaomi MI UI
Android (9.0 Pie)
Connectivity & Features
Bluetooth
5.0
5.0
Wi-Fi
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Hotspot, Wi-Fi Direct
USB
USB Type-C (reversible), USB 2.0
USB Type-C (reversible)
Features
Mass storage device, USB OTG
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
Cellular
LTE (FDD)
Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28
Bands 1, 2, 3, 4, 5, 7, 8, 20, 28
LTE (TDD)
Bands 38, 39, 40
Bands 38, 40
UMTS
850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
Data
Dual SIM
Yes
Yes
SIM type
Nano SIM
Nano SIM
HD Voice
Yes
VoLTE
Yes
Battery
Capacity
3300 mAh
4030 mAh
Type
Not user replaceable
Not user replaceable
Charging
Qualcomm Quick Charge 4+, Qi wireless charging
Qualcomm Quick Charge 3.0
Phone features
Notifications
Haptic feedback, Music ringtones, Vibration
Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording
Shopping information
In The Box
Case, 18W Charger, USB Type-C cable, Type-c to 3.5 mm adapter, SIM removal tool, Documentation
10W charger, USB Type-C cable, SIM eject tool, User guide, Soft case, Warranty card
