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Samsung Galaxy M31 vs Samsung Galaxy M21 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Comparison mode:
Specs Size
Differences only
Samsung Galaxy M31
Samsung Galaxy M21
Samsung Galaxy M31 Samsung Galaxy M21
Released · Mar 05, 2020
Released · Mar 23, 2020
6.4-inch · 2340x1080px
6.4-inch · 2340x1080px
Quad camera
Triple camera
6GB · 64GB
4GB · 64GB
6000 mAh
6000 mAh

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
Weight
6.74 oz (191.0 g) 6.63 oz (188.0 g)
Materials
Back: Plastic
Frame: Plastic 		Back: Plastic
Frame: Plastic
Biometrics
2D Face unlock, Fingerprint (touch) 2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Blue, Black, Red Midnight blue, Raven black

Display

Size
6.4-inch 6.4-inch
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI 2340x1080px, 19.5:9 ratio, 403 PPI
Technology
Super AMOLED Super AMOLED
Screen-to-body
83.97 % 84.11 %
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

Hardware

System chip
Exynos 9611 (10 nm) Exynos 9611 (10 nm)
Processor
Octa-core
4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53 		Octa-core
4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53
GPU
Mali-G72 MP3 Mali-G72 MP3
RAM
6GB (LPDDR4) 4GB (LPDDR4)
Internal storage
64GB (UFS 2.1), available to use: 49 GB 64GB, available to use: 49 GB
Storage expansion
microSDXC up to 512 GB microSDXC up to 512 GB
OS
Android (11, 10), Samsung One UI Android (11, 10), Samsung One UI

Battery

Capacity
6000 mAh 6000 mAh
Type
Li - Polymer Li - Polymer
Charging
Fast charging Fast charging
Charge speed
Wired: 15.0W

Camera

Rear
Quad camera Triple camera
Main camera
64 MP (PDAF)
Aperture size: F1.8
Focal length: 26 mm
Sensor size: 1/1.7"
Pixel size: 0.8 μm 		48 MP (PDAF)
Aperture size: F2.0
Focal length: 26 mm
Sensor size: 1/2"
Pixel size: 0.8 μm
Second camera
8 MP (Ultra-wide)
Aperture size: F2.2
Focal Length: 12 mm
Sensor size: 1/4"
Pixel size: 1.12 μm 		8 MP (Ultra-wide)
Aperture size: F2.2
Focal Length: 12 mm
Sensor size: 1/4"
Pixel size: 1.12 μm
Third camera
5 MP (Macro)
Aperture size: F2.2
Focal Length: 25 mm
Sensor size: 1/5"
Pixel size: 1.12 μm 		5 MP (Depth information)
Aperture size: F2.2
Fourth camera
5 MP (Depth information)
Aperture size: F2.2
Flash
LED LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
Hyperlapse, EIS 		3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
EIS
Front
32 MP (HDR, Slow-motion videos), Video capture: 1920x1080 (Full HD) 20 MP (HDR), Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0 5.0
WLAN
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, USB 2.0 Type-C, USB 2.0
Location
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
Other
NFC

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Loudspeaker
Features
Dolby Atmos Dolby Atmos
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM FM
Additional microphone(s)
Noise cancellation

Cellular

4G (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)
4G (TDD)
Bands 38(2600), 40(2300), 41(2600+) Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900) Bands 1(2100), 2(1900), 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
Dual SIM
Yes Yes
SIM type
Nano SIM Nano SIM
VoLTE
Yes

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

MSRP
€ 240
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

Alternative variants

with 128GB storage
Internal storage 128GB
with 128GB storage
RAM 6GB
Internal storage 128GB
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