Xiaomi Mi A2 vs Xiaomi Mi 9
Display
Display size
Resolution
Pixel density
Technology
IPS LCD
AMOLED
Screen-to-body ratio
77.32 %
85.23 %
Features
Scratch-resistant glass (Corning Gorilla Glass 5), ShatterShield, Ambient light sensor, Proximity sensor
HDR video support, Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor
Camera
Rear
Dual camera
Triple camera
Main camera
Hardware Features
Phase detection autofocus
Sapphire crystal lens cover, Laser and Phase detection autofocus, CMOS image sensor
Specifications
Aperture size: F1.8; Sensor size: 1/2.9"; Pixel size: 1.25 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Second camera
20 megapixels
12 megapixels
Hardware Features
Telephoto, Sapphire crystal lens cover, Phase detection autofocus
Specifications
Aperture size: F1.8; Sensor size: 1/2.8"; Pixel size: 1 μm
Optical zoom: 2x; Aperture size: F2.2; Focal Length: 50 mm; Sensor size: 1/3.4"; Pixel size: 1 μm
Third camera
16 megapixels
Hardware Features
Ultra-wide, Sapphire crystal lens cover, Phase detection autofocus
Specifications
Aperture size: F2.2; Focal Length: 17 mm; Sensor size: 1/3"; Pixel size: 1 μm
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (960 fps), 1280x720 (HD) (960 fps)
Features
Video calling, Video sharing
Continuous autofocus, Digital image stabilization, Video calling, Video sharing
Front
20 megapixels
20 megapixels
Features
Flash, High Dynamic Range mode (HDR)
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: Aluminum
Back: Glass (Corning Gorilla Glass 5); Frame: Metal
Biometrics
Fingerprint (touch)
In-screen fingerprint
Colors
Black, Gold, Pink, Blue, Red
Black, Purple, Blue
Multimedia
Headphones
USB Type-C (reversible)
USB Type-C (reversible)
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)
for Noise cancellation
Hardware & Performance
System chip
Qualcomm Snapdragon 660 SDM660
Qualcomm Snapdragon 855
Processor
GPU
Adreno 512
Adreno 640
RAM
Internal storage
128 GB
128 GB, not expandable
OS
Android (8.1 Oreo)
Android (9.0 Pie), Xiaomi MI UI
Connectivity & Features
Bluetooth
5.0
5.0
Wi-Fi
802.11 a, b, g, n, ac, dual-band; Hotspot, Wi-Fi Direct
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot
USB
USB Type-C (reversible), USB 2.0
USB Type-C (reversible), USB 2.0
Features
Mass storage device
Mass storage device, USB OTG
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
Cellular
LTE (FDD)
Bands 1, 2, 3, 4, 5, 7, 8, 20
Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28
LTE (TDD)
Bands 38, 40
Bands 38, 39, 40
UMTS
850, 900, 1800, 1900 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
3010 mAh
3300 mAh
Type
Li - Polymer, Not user replaceable
Not user replaceable
Charging
Qualcomm Quick Charge 3.0
Qualcomm Quick Charge 4+, Qi wireless charging
Phone features
Notifications
Haptic feedback, Music ringtones, Vibration
Haptic feedback, Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording
Shopping 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
