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Samsung Galaxy M31 vs Samsung Galaxy A22 vs Samsung Galaxy S21

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

Comparison mode:

Display

Size:

6.4 inches
6.4 inches
6.2 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
1600 x 720 pixels, 20:9 ratio, 274 PPI
2400 x 1080 pixels, 20:9 ratio, 424 PPI

Technology:

Super AMOLED
Super AMOLED
Dynamic AMOLED

Refresh rate:

90Hz
120Hz (adaptive)

Screen-to-body:

83.97 %
84.30 %
86.06 %

Peak brightness:

420 cd/m2 (nit)
1300 cd/m2 (nit)

Features:

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

Hardware

System chip:

Exynos 9611
MediaTek Helio G80 MT6769T
Qualcomm Snapdragon 888

Processor:

Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm
Octa-core, 2000 MHz, Cortex-A75, 64-bit, 12 nm
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm

GPU:

Mali-G72 MP3
Mali G52 MC2
Adreno 660

RAM:

6GB LPDDR4
4GB LPDDR4
8GB LPDDR5

Internal storage:

64GB (UFS 2.1), available to use: 49 GB
64GB
128GB (UFS 3.0), not expandable

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 1024 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

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

Battery

Capacity:

6000 mAh
4000 mAh

Type:

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

Charging:

Fast charging
Fast charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging

Max charge speed:

Wired: 15.0W
Wired: 15.0W
Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Quad camera
Quad camera
Triple camera

Main camera:

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

Specifications:

Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F1.8
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.76"; Pixel size: 1.8 μm

Second camera:

8 MP (Ultra-wide)
8 MP (Ultra-wide)
64 MP (Telephoto, OIS, PDAF)

Specifications:

Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Aperture size: F2.2
Aperture size: F2.0; Focal Length: 29 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Third camera:

5 MP (Macro)
2 MP (Depth information)
12 MP (Ultra-wide, Autofocus)

Specifications:

Aperture size: F2.2; Focal Length: 25 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.4
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Fourth camera:

5 MP (Depth information)
2 MP (Macro)

Specifications:

Aperture size: F2.2
Aperture size: F2.4

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
1920x1080 (Full HD)
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

Hyperlapse, EIS
OIS
OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS

Front:

32 MP (HDR, Slow-motion videos)
13 MP
10 MP (PDAF, HDR)

Video capture:

1920x1080 (Full HD)
3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)
6.27 x 2.90 x 0.33 inches (159.3 x 73.6 x 8.4 mm)
5.97 x 2.80 x 0.31 inches (151.7 x 71.2 x 7.9 mm)

Weight:

6.74 oz (191.0 g)
6.56 oz (186.0 g)
6.03 oz (171.0 g)

Materials:

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

Resistance:

Water, Dust; IP68

Biometrics:

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

Keys:

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

Colors:

Blue, Black, Red
Black, White, Mint, Violet
Phantom pink, Violet, Gray, White

Cellular

5G:

n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave

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), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600)

LTE (TDD):

Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)

UMTS:

Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Bands 1(2100), 2(1900), 5(850), 8(900), 9(1700)
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
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS

Dual SIM:

Yes
Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
No 3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

Dolby Atmos
Dolby Atmos
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM, Stereo, RDS

Additional microphone(s):

for Noise cancellation
for Noise cancellation
for Noise cancellation, Video recording

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, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0
Type-C (reversible)
Type-C (reversible), USB 3.2

Features:

Charging
Charging
Charging, Headphones port, OTG, Video out

Location:

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

Other:

NFC
NFC
NFC, ANT+

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Feb 07, 2020
Dec 08, 2020

FCC ID value:

A3LSMM315F
A3LSMG991U

Measured SAR:

Head:

0.42 W/kg
0.36 W/kg

Body:

0.41 W/kg
1.08 W/kg

Simultaneous Transmission:

1.54 W/kg
3.96 W/kg

Wireless Router:

0.74 W/kg
1.09 W/kg

Phablet:

2.49 W/kg

Buyers information

Price:

€ 240
$ 800

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
C to C Data Cable, Ejection Pin

Availability

Officially announced:

Feb 25, 2020
Jun 03, 2021
Jan 14, 2021
FCC OKs Cingular\'s purchase of AT&T Wireless