Samsung Galaxy A9 (2018) vs Samsung Galaxy A40
Display
Display size
Resolution
Pixel density
Technology
Super AMOLED
Super AMOLED
Screen-to-body ratio
80.51 %
85.73 %
Features
Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Camera
Rear
Quad camera
Dual camera
Main camera
Hardware Features
Phase detection autofocus
Phase detection autofocus
Specifications
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 0.9 μm
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Second camera
10 megapixels
5 megapixels
Hardware Features
Telephoto, Autofocus
Ultra-wide
Specifications
Optical zoom: 2x; Aperture size: F2.4; Focal Length: 52 mm; Sensor size: 1/3.9"; Pixel size: 1 μm
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Third camera
8 megapixels
Hardware Features
Ultra-wide
Specifications
Aperture size: F2.4; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Fourth camera
5 megapixels
Hardware Features
Depth information
Specifications
Aperture size: F2.2; Focal Length: 24 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Flash
LED
LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
Features
Hyperlapse, Continuous autofocus, Digital image stabilization, Video calling, Video sharing
Hyperlapse, Video calling, Video sharing
Front
24 megapixels
25 megapixels
Design
Dimensions
Weight
the average is 6 oz (172 g)
the average is 6 oz (172 g)
Materials
Back: Glass; Frame: Metal
Back: Plastic
Biometrics
2D Face unlock, Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Colors
Black, Pink, Blue
Black, Pink, Blue, White
Hardware & Performance
System chip
Qualcomm Snapdragon 660 SDM660
Samsung Exynos 7 Octa 7885
Processor
GPU
Adreno 512
Mali-G71 MP2
RAM
Internal storage
128 GB
64 GB
Maximum User Storage
108.9 GB
49.4 GB
Storage expansion
up to 512 GB
up to 512 GB
OS
Android (8.0 Oreo), Samsung Experience UI
Android (9.0 Pie), Samsung One UI
Battery
Capacity
3800 mAh
3100 mAh
Charging
Samsung Adaptive Fast Charging
Samsung Adaptive Fast Charging
Talk time (3G)
the average is 23 h (1364 min)
the average is 23 h (1364 min)
Internet use
3G
13 hours
9 hours
LTE
15 hours
11 hours
Wi-Fi
15 hours
11 hours
Music playback
112.00 hours
62.00 hours
Video playback
19.00 hours
14.00 hours
Cellular
LTE (FDD)
Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66
Bands 1, 3, 5, 7, 8, 20
LTE (TDD)
Bands 38, 40, 41
Bands 38, 40, 41
UMTS
850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1900, 2100 MHz
GSM
850, 900, 1800, 1900 MHz
850, 900, 1800, 1900 MHz
Data
Dual SIM
Yes
SIM type
Nano SIM
Nano SIM
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
Samsung Pay
Location
GPS, A-GPS, Glonass, Galileo, BeiDou
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
Phone features
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
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
FM
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Headphones connector
3.5mm
3.5mm
Additional microphone(s)
for Noise cancellation
Regulatory Approval
FCC approval
Date approved
Oct 18, 2018
Mar 08, 2019
FCC measured SAR
Head
0.24 W/kg
0.51 W/kg
Body
0.84 W/kg
0.46 W/kg
Simultaneous Transmission
1.58 W/kg
1.02 W/kg
Wireless Router
1.40 W/kg
0.61 W/kg
Phablet
3.95 W/kg
Shopping information
In The Box
Charger, USB cable, Headphones, SIM removal tool, Documentation
