Samsung Galaxy A9 (2018) vs Samsung Galaxy A40

$399.99 VIEW ON AMAZON
$292.95 VIEW ON AMAZON

Display

Display size

6.3 inches
5.9 inches

Resolution

1080 x 2220 pixels
1080 x 2340 pixels

Pixel density

392 ppi
437 ppi

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

24 megapixels
16 megapixels

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

6.40 x 3.03 x 0.31 inches (162.5 x 77 x 7.8 mm)
5.68 x 2.72 x 0.31 inches (144.3 x 69.1 x 7.9 mm)

Weight

6.46 oz (183 g)
the average is 6 oz (172 g)
4.94 oz (140 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

Octa-core, 2200 MHz, Kryo 260, 64-bit, 14 nm
Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm

GPU

Adreno 512
Mali-G71 MP2

RAM

6 GB
4 GB

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)

23.00 hours
the average is 23 h (1364 min)
18.00 hours
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

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

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 ID value: A3LSMA920F link
FCC ID value: A3LSMA405FN link

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
 
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