Samsung Galaxy A3 (2017) vs Samsung Galaxy A40

Compare phone and tablet specifications of up to three devices. Type a model name in the search field of our phone specs comparison tool or pick a popular device from the ones below.

Display

Size

4.7 inches
5.9 inches

Resolution

1280 x 720 pixels,
312 PPI
2340 x 1080 pixels, 19.5:9 ratio,
437 PPI

Technology

Super AMOLED
Super AMOLED

Screen-to-body

67.85 %
85.73 %

Features

Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip

Samsung Exynos 7 Octa 7870
Exynos 7904

Processor

Octa-core, 1600 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm

GPU

Mali-T830 MP2
Mali-G71 MP2

RAM

2GB LPDDR3
4GB LPDDR4

Internal storage

16GB, available to use: 9.7 GB
64GB, available to use: 49.4 GB

Storage expansion

microSDXC up to 256 GB
microSDXC up to 512 GB

OS

Android (7.0 Nougat, 6.0 Marshmallow)
Android (10, 9.0 Pie), Samsung One UI

Battery

Capacity

2350 mAh
3100 mAh

Type

Not user replaceable
Li - Polymer, Not user replaceable

Charging

 
Samsung Adaptive Fast Charging

Camera

Rear

Single camera
Dual camera

Main camera

13 MP (Autofocus, CMOS image sensor)
16 MP (PDAF)

Specifications

Aperture size: F1.9
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm

Second camera

 
5 MP (Ultra-wide)

Specifications

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

Video recording

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)

Features

Video calling, Video sharing
Hyperlapse, Video calling, Video sharing

Front

8 MP
25 MP

Design

Dimensions

5.33 x 2.61 x 0.31 inches (135.4 x 66.2 x 7.9 mm)
5.69 x 2.72 x 0.31 inches (144.4 x 69.2 x 7.9 mm)

Weight

4.87 oz (138.0 g)
the average is 6.2 oz (176 g)
4.94 oz (140.0 g)
the average is 6.2 oz (176 g)

Materials

Back: Glass; Frame: Aluminum
Back: Plastic; Frame: Plastic

Resistance

Water, Dust; IP 68
 

Biometrics

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

Features

Touch sensitive control keys
 

Colors

Black sky, Gold sand, Peach cloud, Blue mist
Black, Coral, Blue, White

Cellular

LTE (FDD)

Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)

LTE (TDD)

Bands 40(2300)
Bands 38(2600), 40(2300), 41(2600+)

UMTS

850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz

Data Speed

LTE-A Cat 6 (300/50 Mbit/s), HSPA
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

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)

 
for Noise cancellation

Connectivity & Features

Bluetooth

4.2
5.0

Wi-Fi

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB

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

Features

Charging, Mass storage device
Charging, Mass storage device

Location

GPS, A-GPS, Glonass
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)

Other

NFC, ANT+, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync

Regulatory Approval

FCC approval

 
 

Date approved

Dec 21, 2016
Mar 08, 2019

FCC ID value: A3LSMA320F link
FCC ID value: A3LSMA405FN link

Measured SAR

 
 

Head

0.45 W/kg
0.51 W/kg

Body

0.74 W/kg
0.46 W/kg

Simultaneous Transmission

1.56 W/kg
1.02 W/kg

Wireless Router

0.94 W/kg
0.61 W/kg
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.
FCC OKs Cingular's purchase of AT&T Wireless