Samsung Galaxy S9 vs Samsung Galaxy A40

$309.69 VIEW ON AMAZON
$236.55 VIEW ON AMAZON

Display

Display size

5.8 inches
5.9 inches

Resolution

1440 x 2960 pixels
1080 x 2340 pixels

Pixel density

568 ppi
437 ppi

Technology

Super AMOLED
Super AMOLED

Screen-to-body ratio

84.36 %
85.73 %

Features

HDR video support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Camera

Rear

Single camera
Dual camera

Main camera

12 megapixels
16 megapixels

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: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm

Second camera

 
5 megapixels

Hardware Features

 
Ultra-wide

Specifications

 
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 μm

Video recording

3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
1920x1080 (Full HD) (30 fps)

Features

High Dynamic Range mode (HDR), Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, Video calling, Video sharing
Hyperlapse, Video calling, Video sharing

Front

8 megapixels
25 megapixels

Features

Autofocus, High Dynamic Range mode (HDR)
 

Design

Dimensions

5.81 x 2.70 x 0.33 inches (147.7 x 68.7 x 8.5 mm)
5.69 x 2.72 x 0.31 inches (144.4 x 69.2 x 7.9 mm)

Weight

5.75 oz (163 g)
the average is 6.1 oz (174 g)
4.94 oz (140 g)
the average is 6.1 oz (174 g)

Materials

Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Back: Plastic

Resistance

Water, Dust; IP 68
 

Biometrics

Iris scanner, 2D Face unlock, Fingerprint (touch)
2D Face unlock, Fingerprint (touch)

Features

Notification light
 

Colors

Black, Gold, Gray, Purple, Blue, Red
Black, Pink, Blue, White

Multimedia

Headphones

3.5 mm jack
3.5 mm jack

Speakers

Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features

32-Bit DAC, aptX-HD
Dolby Atmos, 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
Samsung Exynos 7 Octa 7885

Processor

Octa-core, 2800 MHz, Kryo 385, 64-bit, 10 nm
Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm

GPU

Adreno 630
Mali-G71 MP2

RAM

4 GB
4 GB

Internal storage

64 GB
64 GB

Available to use

 
49.4 GB

Storage expansion

microSDXC up to 400 GB
microSDXC up to 512 GB

OS

Android (9.0 Pie, 8.0 Oreo), Samsung One UI
Android (9.0 Pie), Samsung One UI

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; Wi-Fi Direct, Hotspot

USB

USB Type-C (reversible), USB 3.1
USB Type-C (reversible), USB 2.0

Features

USB OTG, Video out
Mass storage device

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), Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers)

Mobile Payment

Samsung Pay
Samsung Pay

Other

NFC, ANT+
NFC, ANT+, 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, 3, 5, 7, 8, 20

LTE (TDD)

Bands 38, 39, 40, 41, 46
Bands 38, 40, 41

UMTS

850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1900, 2100 MHz

Data

LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA
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

Battery

Capacity

3000 mAh
3100 mAh

Type

Li - Ion, Not user replaceable
Li - Polymer, Not user replaceable

Charging

Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging
Samsung Adaptive Fast Charging

Talk time

31.00 hours
the average is 20 h (1174 min)
 

Stand-by time

3.4 days (82 hours)
the average is 20 days (491 h)
 

Talk time (3G)

 
18.00 hours
the average is 23 h (1387 min)

Internet use

3G: 11 hours; LTE: 12 hours; Wi-Fi: 14 hours
3G: 9 hours; LTE: 11 hours; Wi-Fi: 11 hours

Music playback

51.00 hours
62.00 hours

Video playback

17.00 hours
14.00 hours

Phone features

Notifications

 
Haptic feedback, Music ringtones, Vibration

Other features

 
Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval

 
 

Date approved

Jan 11, 2018
Mar 08, 2019

FCC ID value: A3LSMG960U link
FCC ID value: A3LSMA405FN link

Measured SAR

 
 

Head

0.35 W/kg
0.51 W/kg

Body

0.96 W/kg
0.46 W/kg

Simultaneous Transmission

1.59 W/kg
1.02 W/kg

Wireless Router

0.95 W/kg
0.61 W/kg

Shopping information

MSRP price

$ 720
 
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