Samsung Galaxy M40 vs Samsung Galaxy M31

$300 VIEW ON eBay
$413 VIEW ON eBay

Display

Size

6.3 inches
6.4 inches

Resolution

2340 x 1080 pixels, 19.5:9 ratio,
409 PPI
2340 x 1080 pixels, 19.5:9 ratio,
403 PPI

Technology

IPS LCD
Super AMOLED

Screen-to-body

84.94 %
83.97 %

Features

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

Hardware & Performance

System chip

Qualcomm Snapdragon 675 SM6150
Exynos 9611

Processor

Octa-core, 2000 MHz, Kryo 460, 64-bit, 11 nm
Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm

GPU

Adreno 612
Mali-G72 MP3

RAM

6GB LPDDR4
6GB LPDDR4

Internal storage

128GB
64GB

Storage expansion

microSDXC up to 512 GB
microSDXC up to 512 GB

OS

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

Battery

Capacity

3500 mAh
6000 mAh

Type

Not user replaceable
Not user replaceable

Charging

Samsung Adaptive Fast Charging
 

Camera

Rear

Triple camera
Quad camera

Main camera

32 MP (PDAF)
64 MP (PDAF)

Specifications

Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 0.8 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Second camera

8 MP (Ultra-wide, PDAF)
8 MP (Ultra-wide)

Specifications

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera

5 MP (Depth information)
5 MP (Macro)

Specifications

Aperture size: F2.2; Focal Length: 24 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 25 mm; Sensor size: 1/5"; Pixel size: 1.12 μm

Fourth camera

 
5 MP (Depth information)

Specifications

 
Aperture size: F2.2

Video recording

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

Features

Hyperlapse, Video calling, Video sharing
Hyperlapse, EIS

Front

16 MP (HDR)
32 MP (HDR, Slow-motion videos)

Design

Dimensions

6.11 x 2.91 x 0.31 inches (155.3 x 73.9 x 7.9 mm)
6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)

Weight

5.93 oz (168 g)
the average is 6.4 oz (184 g)
6.74 oz (191 g)
the average is 6.4 oz (184 g)

Materials

Back: Plastic
Back: Plastic; Frame: Plastic

Biometrics

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

Colors

Midnight blue, Seawater blue
Ocean blue, Space black

Cellular

LTE (FDD)

Bands 1(2100), 3(1800), 5(850), 8(900)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)

LTE (TDD)

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

UMTS

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

Data Speed

LTE-A Cat 13/5 (400/75 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

VoLTE

 
Yes

Multimedia

Headphones

No 3.5mm jack
3.5mm jack

Features

Dolby Atmos, Album art cover, Background playback
Dolby Atmos

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, Headphones port, Mass storage device
Charging

Sensors

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

Other

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

Shopping information

In The Box

Type-C earphones, Data cable, 15W charger, User manual, Ejection pin
15W fast charger, Data cable, Ejection pin, User Manual
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