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Samsung Galaxy M31 vs Samsung Galaxy M21 vs Samsung Galaxy A52

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

Comparison mode:

Display

Size:

6.4 inches
6.4 inches
6.5 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
2400 x 1080 pixels, 20:9 ratio, 405 PPI

Technology:

Super AMOLED
Super AMOLED
Super AMOLED

Refresh rate:

90Hz

Screen-to-body:

83.97 %
84.11 %
84.79 %

Peak brightness:

420 cd/m2 (nit)
420 cd/m2 (nit)

Features:

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

Hardware

System chip:

Exynos 9611 (10 nm)
Exynos 9611 (10 nm)
Qualcomm Snapdragon 720G SM7125 (8 nm)

Processor:

Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Octa-core, 2x 2.3GHz Kryo 465 + 6x 1.8GHz Kryo 465, 64-bit

GPU:

Mali-G72 MP3
Mali-G72 MP3
Adreno 618

RAM:

6GB LPDDR4
4GB LPDDR4
6GB LPDDR4

Internal storage:

64GB (UFS 2.1), available to use: 49 GB
64GB, available to use: 49 GB
128GB

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 512 GB
microSDXC up to 1024 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

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

Battery

Capacity:

6000 mAh
6000 mAh
4500 mAh

Type:

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

Charging:

Fast charging
Fast charging
Qualcomm Quick Charge 2.0

Max charge speed:

Wired: 15.0W
Wired: 25.0W

Camera

Rear:

Quad camera
Triple camera
Quad camera

Main camera:

64 MP (PDAF)
48 MP (PDAF)
64 MP (OIS, Autofocus)

Specifications:

Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; 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)
8 MP (Ultra-wide)
12 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 12 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
Aperture size: F2.2; Pixel size: 1.12 μm

Third camera:

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

Specifications:

Aperture size: F2.2; Focal Length: 25 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2
Aperture size: F2.4; Pixel size: 1.12 μm

Fourth camera:

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

Specifications:

Aperture size: F2.2
Aperture size: F2.4; Pixel size: 1.12 μm

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (60 fps)

Features:

Hyperlapse, EIS
EIS
Continuous autofocus, Picture-taking during video recording

Front:

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

Video capture:

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

Design

Dimensions:

6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)
6.26 x 2.96 x 0.35 inches (159.0 x 75.1 x 8.9 mm)
6.30 x 2.96 x 0.33 inches (159.9 x 75.1 x 8.4 mm)

Weight:

6.74 oz (191.0 g)
6.63 oz (188.0 g)
6.67 oz (189.0 g)

Materials:

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

Resistance:

Water, Dust; IP67

Biometrics:

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

Blue, Black, Red
Midnight blue, Raven black

Cellular

LTE (FDD):

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)
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), 12(700 a), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 32(1500 L-band), 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), 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
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS

Dual SIM:

Yes
Yes
Shared with microSD

SIM type:

Nano SIM
Nano SIM
Nano SIM

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features:

Dolby Atmos
Dolby Atmos
Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
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
Charging
Charging, Headphones port, OTG

Location:

GPS, A-GPS, Glonass, Galileo, BeiDou, 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
Accelerometer, Gyroscope, Compass, Hall (for flip covers)

Other:

NFC
NFC

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Feb 07, 2020

FCC ID value:

A3LSMM315F

Measured SAR:

Head:

0.42 W/kg

Body:

0.41 W/kg

Simultaneous Transmission:

1.54 W/kg

Wireless Router:

0.74 W/kg

Buyers information

Price:

€ 240
€ 429

User Manual:

This is the official Samsu​ng Galaxy M31 User Guide in English provided from the manufacturer.

In The Box:

15W fast charger, Data cable, Ejection pin, User Manual
This is the official Samsu​ng Galaxy M21 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Feb 25, 2020
Mar 18, 2020
Mar 17, 2021
FCC OKs Cingular\'s purchase of AT&T Wireless