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Samsung Galaxy M31s vs Samsung Galaxy M51 vs Samsung Galaxy A71

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

Comparison mode:

Display

Size:

6.5 inches
6.7 inches
6.7 inches

Resolution:

2400 x 1080 pixels, 20:9 ratio, 405 PPI
2340 x 1080 pixels, 20:9 ratio, 385 PPI
2400 x 1080 pixels, 20:9 ratio, 393 PPI

Technology:

Super AMOLED
Super AMOLED Plus
Super AMOLED Plus

Refresh rate:

60Hz

Screen-to-body:

86.06 %
88.27 %
87.24 %

Features:

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

Hardware

System chip:

Samsung Exynos 9611
Qualcomm Snapdragon 730 SM7150-AA
Qualcomm Snapdragon 730 SM7150-AA

Processor:

Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm
Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm
Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm

GPU:

Mali-G72 MP3
Adreno 618
Adreno 618

RAM:

6GB LPDDR4
6GB LPDDR4
6GB LPDDR4

Internal storage:

128GB (UFS 2.1), available to use: 106.4 GB
128GB, available to use: 106 GB
128GB, available to use: 106.1 GB

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 512 GB
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

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

Battery

Capacity:

6000 mAh
7000 mAh
4500 mAh

Type:

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

Battery life test results:

Charging:

Fast charging, Reverse charging
Fast charging, Reverse charging
Fast charging

Max charge speed:

Wired: 25.0W
Wired: 25.0W

Camera

Rear:

Quad camera
Quad camera
Quad camera

Main camera:

64 MP (PDAF)
64 MP (PDAF)
64 MP (PDAF)

Specifications:

Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.76"; 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:

12 MP (Ultra-wide)
12 MP (Ultra-wide)
12 MP (Ultra-wide)

Specifications:

Aperture size: F2.2
Aperture size: F2.2
Aperture size: F2.2; Focal Length: 12 mm

Third camera:

5 MP (Macro)
5 MP (Macro)
5 MP (Macro)

Specifications:

Aperture size: F2.4
Aperture size: F2.4
Aperture size: F2.4; Focal Length: 25 mm

Fourth camera:

5 MP (Depth information)
5 MP (Depth information)
5 MP (Depth information)

Specifications:

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

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (480 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

Hyperlapse, EIS
EIS

Front:

32 MP
32 MP (HDR)
32 MP (HDR)

Video capture:

3840x2160 (4K UHD) (30 fps)
1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

6.27 x 2.93 x 0.37 inches (159.3 x 74.4 x 9.3 mm)
6.45 x 3.00 x 0.37 inches (163.9 x 76.3 x 9.5 mm)
6.44 x 2.99 x 0.30 inches (163.6 x 76 x 7.7 mm)

Weight:

7.16 oz (203.0 g)
7.51 oz (213.0 g)
6.31 oz (179.0 g)

Materials:

Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic

Biometrics:

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

Keys:

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

Colors:

Mirage black, Mirage blue
Black, White
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue

Cellular

LTE (FDD):

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

LTE (TDD):

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

UMTS:

Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)

Data Speed:

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes
Yes
Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Loudspeaker

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM, Stereo, RDS
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
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
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
Type-C (reversible), USB 2.0

Features:

Charging, OTG
Charging
Charging, OTG

Location:

GPS, A-GPS, Cell ID, Wi-Fi positioning
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
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers)

Other:

NFC
NFC
NFC, ANT+

Buyers information

Price:

€ 310
€ 360

User Manual:

This is the official Samsu​ng Galaxy M31s User Guide in English provided from the manufacturer.
This is the official Samsu​ng Galaxy A71 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Jul 30, 2020
Aug 31, 2020
Dec 12, 2019
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