Xiaomi Mi 9 SE vs Samsung Galaxy A40
Display
Display size
Resolution
Pixel density
Technology
AMOLED
Super AMOLED
Screen-to-body ratio
83.96 %
85.73 %
Peak brightness
600 cd/m2 (nit)
Features
HDR video support, Scratch-resistant glass (Corning Gorilla Glass), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Camera
Rear
Triple camera
Dual camera
Main camera
Hardware Features
Phase detection autofocus
Phase detection autofocus
Specifications
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Second camera
13 megapixels
5 megapixels
Hardware Features
Ultra-wide, Phase detection autofocus
Ultra-wide
Specifications
Aperture size: F2.4; Sensor size: 1/3.06"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Third camera
8 megapixels
Hardware Features
Telephoto, Autofocus
Specifications
Aperture size: F2.4; Sensor size: 1/4"; Pixel size: 1.12 μm
Flash
LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (960 fps)
1920x1080 (Full HD) (30 fps)
Features
Digital image stabilization, Video calling, Video sharing
Hyperlapse, Video calling, Video sharing
Front
20 megapixels
25 megapixels
Features
High Dynamic Range mode (HDR)
Design
Dimensions
Weight
the average is 6 oz (172 g)
the average is 6 oz (172 g)
Materials
Back: Plastic
Biometrics
2D Face unlock, In-screen fingerprint
2D Face unlock, Fingerprint (touch)
Colors
Black, Purple, Blue
Black, Pink, Blue, White
Hardware & Performance
System chip
Qualcomm Snapdragon 712 SDM712
Samsung Exynos 7 Octa 7885
Processor
GPU
Adreno 616
Mali-G71 MP2
RAM
Internal storage
128 GB
64 GB
Maximum User Storage
49.4 GB
Storage expansion
up to 512 GB
OS
Android (9.0 Pie)
Android (9.0 Pie), Samsung One UI
Battery
Capacity
3070 mAh
3100 mAh
Charging
Samsung Adaptive Fast Charging
Talk time (3G)
the average is 23 h (1387 min)
Internet use
3G
9 hours
LTE
11 hours
Wi-Fi
11 hours
Music playback
62.00 hours
Video playback
14.00 hours
Cellular
LTE (FDD)
Bands 1, 3, 5, 7, 8
Bands 1, 3, 5, 7, 8, 20
LTE (TDD)
Bands 34, 38, 39, 40, 41
Bands 38, 40, 41
UMTS
850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz
GSM
850, 900, 1800, 1900 MHz
850, 900, 1800, 1900 MHz
CDMA
800 MHz
Data
Dual SIM
Yes
Yes
SIM type
Nano SIM
Nano SIM
VoLTE
Yes
Connectivity
Bluetooth
5.0
5.0
Wi-Fi
802.11 a, b, g, n, ac, dual-band
802.11 a, b, g, n, ac, dual-band
USB
USB 2.0
USB 2.0
Connector
USB Type-C (reversible)
USB Type-C (reversible)
Features
Mass storage device
Mass storage device
Mobile Payment
Samsung Pay
Location
GPS, A-GPS, Glonass, Galileo, BeiDou
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, Infrared, VoIP, Tethering, Computer sync, OTA sync
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
Phone features
Sensors
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
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
Multimedia
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Headphones connector
USB Type-C (reversible)
3.5mm
Additional microphone(s)
for Noise cancellation
Regulatory Approval
FCC measured SAR
Head
0.51 W/kg
Body
0.46 W/kg
Simultaneous Transmission
1.02 W/kg
Wireless Router
0.61 W/kg
