Samsung Galaxy S9 vs Xiaomi Mi A3
Display
Display size
Resolution
Pixel density
Technology
Super AMOLED
Super AMOLED
Screen-to-body ratio
84.36 %
82.56 %
Features
HDR video support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Camera
Rear
Single camera
Triple camera
Main camera
Hardware Features
Optical image stabilization, Phase detection autofocus
Phase detection autofocus
Specifications
Aperture size: F1.5/F2.4; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F1.8; Sensor size: 1/2.3"; Pixel size: 0.8 μm
Second camera
8 megapixels
Hardware Features
Ultra-wide
Specifications
Aperture size: F2.2; Pixel size: 1.12 μm
Third camera
2 megapixels
Hardware Features
Depth information
Specifications
Aperture size: F2.4
Flash
LED
LED
Video recording
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
Features
High Dynamic Range mode (HDR), Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, Video calling, Video sharing
Digital image stabilization, Video calling, Video sharing
Front
8 megapixels
32 megapixels
Features
Autofocus, 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: Aluminum
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Resistance
Water, Dust; IP 68
Biometrics
Iris scanner, 2D Face unlock, Fingerprint (touch)
2D Face unlock, In-screen fingerprint
Features
Notification light
Colors
Black, Gold, Gray, Purple, Blue, Red
Gray, Blue, White
Multimedia
Headphones
3.5 mm jack
3.5 mm jack
Speakers
Earpiece, Multiple speakers
Earpiece, Loudspeaker
Features
32-Bit DAC, aptX-HD
Album art cover, Background playback
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
FM
Additional microphone(s)
for Noise cancellation
for Noise cancellation
Hardware & Performance
System chip
Qualcomm Snapdragon 845 SDM845
Qualcomm Snapdragon 665
Processor
GPU
Adreno 630
Adreno 610
RAM
Internal storage
64 GB
128 GB
Storage expansion
microSDXC up to 400 GB
microSDXC up to 256 GB
OS
Android (9.0 Pie, 8.0 Oreo), Samsung One 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 3.1
USB Type-C (reversible)
Features
USB OTG, Video out
Mass storage device
Location
GPS, A-GPS, Glonass, Galileo, BeiDou
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass
Mobile Payment
Samsung Pay
Other
NFC, ANT+
Infrared, VoIP, Tethering, Computer sync, OTA sync
Cellular
LTE (FDD)
Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71
Bands 1, 2, 3, 4, 5, 7, 8, 20, 28
LTE (TDD)
Bands 38, 39, 40, 41, 46
Bands 38, 40
UMTS
850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
Data
Dual SIM
Yes
SIM type
Nano SIM
Nano SIM
Battery
Capacity
3000 mAh
4030 mAh
Type
Li - Ion, Not user replaceable
Not user replaceable
Charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging
Qualcomm Quick Charge 3.0
Talk time
the average is 21 h (1250 min)
Stand-by time
the average is 21 days (493 h)
Internet use
3G: 11 hours; LTE: 12 hours; Wi-Fi: 14 hours
Music playback
51.00 hours
Video playback
17.00 hours
Phone features
Notifications
Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording
Regulatory Approval
FCC measured SAR
Head
0.35 W/kg
Body
0.96 W/kg
Simultaneous Transmission
1.59 W/kg
Wireless Router
0.95 W/kg
Shopping information
In The Box
10W charger, USB Type-C cable, SIM eject tool, User guide, Soft case, Warranty card
MSRP price
$ 720
