Samsung Galaxy M21 vs Motorola Moto G8 Power vs Samsung Galaxy M31

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

Display

Size:

6.4 inches
6.4 inches
6.4 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
2300 x 1080 pixels, 19:9 ratio, 397 PPI
2340 x 1080 pixels, 19.5:9 ratio, 403 PPI

Technology:

Super AMOLED
IPS LCD
Super AMOLED

Screen-to-body:

84.11 %
86.13 %
83.97 %

Peak brightness:

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

Features:

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

Hardware

System chip:

Exynos 9611
Qualcomm Snapdragon 665 SM6125
Exynos 9611

Processor:

Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm
Octa-core, 2000 MHz, Kryo 260, 64-bit, 11 nm
Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm

GPU:

Mali-G72 MP3
Adreno 610
Mali-G72 MP3

RAM:

4GB LPDDR4
4GB
6GB LPDDR4

Internal storage:

64GB, available to use: 49 GB
64GB (eMMC 5.1)
64GB (UFS 2.1), available to use: 49 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 (10), Samsung One UI
Android (10)
Android (10), Samsung One UI

Battery

Capacity:

6000 mAh
5000 mAh
6000 mAh

Type:

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

Battery life test results:

Charging:

Fast charging
Motorola TurboPower
Fast charging

Max charge speed:

Wired: 15.0W

Camera

Rear:

Triple camera
Quad camera
Quad camera

Main camera:

48 MP (PDAF)
16 MP (PDAF)
64 MP (PDAF)

Specifications:

Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.7; Sensor size: 1/2.8"; Pixel size: 1.12 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 (Telephoto, PDAF)
8 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Optical zoom: 2x; Aperture size: F2.2; 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)
8 MP (Ultra-wide)
5 MP (Macro)

Specifications:

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

Fourth camera:

2 MP (Macro)
5 MP (Depth information)

Specifications:

Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.75 μm
Aperture size: F2.2

Video recording:

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

Features:

EIS
Time-lapse video, Hyperlapse, EIS
Hyperlapse, EIS

Front:

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

Video capture:

1920x1080 (Full HD)
1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

6.26 x 2.96 x 0.35 inches (159.0 x 75.1 x 8.9 mm)
6.14 x 2.99 x 0.38 inches (155.95 x 75.84 x 9.63 mm)
6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)

Weight:

6.63 oz (188.0 g)
6.95 oz (197.0 g)
6.74 oz (191.0 g)

Materials:

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

Resistance:

Splash

Biometrics:

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

Keys:

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

Colors:

Midnight blue, Raven black
Smoke black, Capri blue
Blue, Black, Red

Cellular

LTE (FDD):

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), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)
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 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)

UMTS:

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

Data Speed:

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 12 (600/100 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
Shared with microSD
Yes

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, Multiple speakers
Earpiece, Loudspeaker

Features:

Dolby Atmos
Dolby Mobile
Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
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 b, g, n; 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

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

Other:

NFC

Regulatory Approval

FCC approval:

Date approved:

Feb 07, 2020

FCC ID value:

A3LSMM315F link

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

User Manual:

This is the official Motor​ola Moto G8 Power User Guide in English provided from the manufacturer.
This is the official Samsu​ng Galaxy M31 User Guide in English provided from the manufacturer.

In The Box:

This is the official Samsu​ng Galaxy M21 User Guide in English provided from the manufacturer.
18W Charger, USB Type-C cable, guides, SIM tool
15W fast charger, Data cable, Ejection pin, User Manual

Availability

Officially announced:

Mar 18, 2020
Feb 07, 2020
Feb 25, 2020
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