Samsung Galaxy A31 vs Samsung Galaxy A40

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$250 VIEW ON AMAZON
$250 VIEW ON AMAZON

Display

Size

6.4 inches
5.9 inches

Resolution

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

Technology

Super AMOLED
Super AMOLED

Screen-to-body

84.88 %
85.73 %

Features

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

Hardware & Performance

System chip

MediaTek Helio P65 MT6768
Exynos 7904

Processor

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

GPU

Mali-G52 MC2
Mali-G71 MP2

RAM

4GB LPDDR4
4GB LPDDR4

Internal storage

64GB
64GB

Storage expansion

microSDXC up to 512 GB
microSDXC up to 512 GB

OS

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

Battery

Capacity

5000 mAh
3100 mAh

Type

Not user replaceable
Li - Polymer, Not user replaceable

Charging

Fast charging
Samsung Adaptive Fast Charging

Camera

Rear

Quad camera
Dual camera

Main camera

48 MP (PDAF)
16 MP (PDAF)

Specifications

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

Second camera

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

Specifications

Aperture size: F2.2
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; 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)
1920x1080 (Full HD) (30 fps)

Features

 
Hyperlapse, Video calling, Video sharing

Front

20 MP
25 MP

Design

Dimensions

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

Weight

6.53 oz (185 g)
the average is 6.4 oz (184 g)
4.94 oz (140 g)
the average is 6.4 oz (184 g)

Materials

Back: Plastic
Back: Plastic; Frame: Plastic

Biometrics

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

Colors

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

Cellular

LTE (FDD)

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

LTE (TDD)

 
Bands 38(2600), 40(2300), 41(2600+)

UMTS

 
850, 900, 1900, 2100 MHz

Data Speed

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

Features

 
Dolby Atmos, Album art cover, Background playback

Connectivity & Features

Bluetooth

Yes
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
Charging, Mass storage device

Sensors

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

Other

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