Samsung Galaxy A40 vs Samsung Galaxy A31

Compare phone and tablet specifications of up to three devices at once.

Display

Size:

5.9 inches
6.4 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 437 PPI
2400 x 1080 pixels, 20:9 ratio, 411 PPI

Technology:

Super AMOLED
Super AMOLED

Screen-to-body:

85.73 %
84.88 %

Features:

Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
60Hz refresh rate, Ambient light sensor, Proximity sensor

Hardware

System chip:

Exynos 7904
MediaTek Helio P65 MT6768

Processor:

Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2000 MHz, Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm

GPU:

Mali-G71 MP2
Mali-G52 MC2

RAM:

4GB LPDDR4
4GB LPDDR4

Internal storage:

64GB, available to use: 49.4 GB
64GB (eMMC 5.1), available to use: 46.2 GB

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone

OS:

Android (11, 10, 9.0 Pie), Samsung One UI
Android (10), Samsung One UI

Battery

Capacity:

3100 mAh
5000 mAh

Type:

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

Charging:

Samsung Adaptive Fast Charging
Fast charging

Max charge speed:

Wired: 15.0W

Camera

Rear:

Dual camera
Quad camera

Main camera:

16 MP (PDAF)
48 MP (PDAF)

Specifications:

Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera:

5 MP (Ultra-wide)
8 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera:

5 MP (Macro)

Specifications:

Aperture size: F2.4

Fourth camera:

5 MP (Depth information)

Specifications:

Aperture size: F2.4

Video recording:

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

Features:

Hyperlapse, Video calling, Video sharing

Front:

25 MP
20 MP

Video capture:

1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

5.69 x 2.72 x 0.31 inches (144.4 x 69.2 x 7.9 mm)
6.27 x 2.88 x 0.34 inches (159.3 x 73.1 x 8.6 mm)

Weight:

4.94 oz (140.0 g)
6.53 oz (185.0 g)

Materials:

Back: Plastic; Frame: Plastic
Back: Plastic

Biometrics:

2D Face unlock, Fingerprint (touch)
In-screen fingerprint

Keys:

Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors:

Black, Coral, Blue, White
Prism Crush black, Prism Crush blue, Prism Crush red, Prism Crush white

Cellular

LTE (FDD):

Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD)

LTE (TDD):

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

UMTS:

Bands 1(2100), 2(1900), 5(850), 8(900)
Bands 1(2100), 2(1900), 5(850), 8(900)

Data Speed:

LTE-A Cat 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes
Yes

SIM type:

Nano SIM
Nano SIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features:

Dolby Atmos, Album art cover, Background playback

Screen mirroring:

Wireless screen share
Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
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), USB 2.0
Type-C (reversible), USB 2.0

Features:

Charging, Mass storage device
Charging, OTG

Location:

GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning

Sensors:

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

Other:

NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
NFC

Regulatory Approval

FCC approval:

Date approved:

Mar 08, 2019
Mar 08, 2020

FCC ID value:

A3LSMA405FN link
A3LSMA315GL

Measured SAR:

Head:

0.51 W/kg
0.53 W/kg

Body:

0.46 W/kg
0.56 W/kg

Simultaneous Transmission:

1.02 W/kg
1.42 W/kg

Wireless Router:

0.61 W/kg
0.65 W/kg

Phablet:

0.89 W/kg

Buyers information

Price:

€ 300

Availability

Officially announced:

Apr 10, 2019
Mar 24, 2020
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