Samsung Galaxy A9 (2018) vs Samsung Galaxy A40 Specs Comparison

Design

Dimensions
6.40 x 3.03 x 0.31 inches 162.5 x 77 x 7.8 mm	5.69 x 2.72 x 0.31 inches 144.4 x 69.2 x 7.9 mm
Weight
6.46 oz (183.0 g)	4.94 oz (140.0 g)
Materials
Back: Glass Frame: Metal	Back: Plastic Frame: Plastic
Biometrics
2D Face unlock, Fingerprint (touch)	2D Face unlock, Fingerprint (touch)
Keys
Left: Other; Right: Volume control, Lock/Unlock key; Back: Other	Right: Volume control, Lock/Unlock key
Colors
Caviar black, Lemonade blue, Bubblegum pink	Black, Coral, Blue, White

Display

Size
6.3-inch	5.9-inch
Resolution
2220x1080px, 18.5:9 ratio, 392 PPI	2340x1080px, 19.5:9 ratio, 437 PPI
Technology
Super AMOLED	Super AMOLED
Screen-to-body
80.51 %	85.73 %
Features
Ambient light sensor, Proximity sensor	Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 660 SDM660 (14 nm)	Exynos 7904 (14 nm)
Processor
Octa-core 2200 MHz Kryo 260	Octa-core 1800 MHz ARM Cortex-A73 and ARM Cortex-A53
GPU
Adreno 512	Mali-G71 MP2
RAM
6GB (LPDDR4)	4GB (LPDDR4)
Internal storage
128GB, available to use: 108.9 GB	64GB, available to use: 49.4 GB
Storage expansion
microSDXC up to 512 GB	microSDXC up to 512 GB
OS
Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI	Android (11, 10, 9.0 Pie), Samsung One UI

Battery

Capacity
3800 mAh	3100 mAh
Type
Li - Polymer	Li - Polymer
Charging
Samsung Adaptive Fast Charging	Samsung Adaptive Fast Charging

Camera

Rear
Quad camera	Dual camera
Main camera
24 MP (PDAF) Aperture size: F1.7 Focal length: 27 mm Sensor size: 1/2.8" Pixel size: 0.9 μm	16 MP (PDAF) Aperture size: F1.7 Focal length: 27 mm Sensor size: 1/2.8" Pixel size: 1.12 μm
Second camera
8 MP (Ultra-wide) Aperture size: F2.4 Focal Length: 12 mm Sensor size: 1/4" Pixel size: 1.12 μm	5 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/5" Pixel size: 1.12 μm
Third camera
8 MP (Telephoto, Autofocus) Optical zoom: 2.0x Aperture size: F2.4 Focal Length: 52 mm Sensor size: 1/3.9" Pixel size: 1 μm
Fourth camera
5 MP (Depth information) 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) Hyperlapse, Continuous autofocus, EIS, Video calling, Video sharing	1920x1080 (Full HD) (30 fps) Hyperlapse, Video calling, Video sharing
Front
24 MP, Video capture: 1920x1080 (Full HD)	25 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
802.11 a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0	Type-C, USB 2.0
Location
GPS, A-GPS, Glonass, Galileo, BeiDou	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)	Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Other
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync	NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Album art cover, Background playback	Dolby Atmos, Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM	FM
Additional microphone(s)
	Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)	Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
4G (TDD)
Bands 38(2600), 40(2300), 41(2600+)	Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)	Bands 1(2100), 2(1900), 5(850), 8(900)
Data Speed
LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA, UMTS	LTE-A Cat 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
	Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Oct 18, 2018 FCC ID value: A3LSMA920F	Date approved: Mar 08, 2019 FCC ID value: A3LSMA405FN
Measured SAR
Head: 0.24 W/kg Body: 0.84 W/kg Simultaneous Transmission: 1.58 W/kg Wireless Router: 1.40 W/kg Phablet: 3.95 W/kg	Head: 0.51 W/kg Body: 0.46 W/kg Simultaneous Transmission: 1.02 W/kg Wireless Router: 0.61 W/kg

Buyers information

In The Box
Charger, USB cable, Headphones, SIM removal tool, Documentation

Availability

Officially announced
Oct 11, 2018	Apr 10, 2019

Alternative variants

Dual SIM

Dual SIM	Yes

Links

Full specifications
Samsung Galaxy A9 (2018) Specs	Samsung Galaxy A40 Specs
PhoneArena Review
Samsung Galaxy A9 (2018) Review
User Reviews
Samsung Galaxy A9 (2018) User Reviews	Samsung Galaxy A40 User Reviews