Samsung Galaxy M21 vs Samsung Galaxy M31s 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.

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Specs Size
Differences only
Samsung Galaxy M21
Samsung Galaxy M31s
Samsung Galaxy M21 Samsung Galaxy M31s
Released · Mar 23, 2020
Released · Aug 06, 2020
6.4-inch · 2340x1080px
6.5-inch · 2400x1080px
Triple camera
Quad camera
4GB · 64GB
6GB · 128GB
6000 mAh
6000 mAh

Availability

Officially announced
Mar 18, 2020 Jul 30, 2020
Prices (MSRP)
€310

Design

Dimensions
6.26 x 2.96 x 0.35 inches
159.0 x 75.1 x 8.9 mm 		6.27 x 2.93 x 0.37 inches
159.3 x 74.4 x 9.3 mm
Weight
6.63 oz / 188.0 g 7.16 oz / 203.0 g
Materials
Back: Plastic
Frame: Plastic
Biometrics
2D Face unlock, Fingerprint (touch) Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Midnight blue, Raven black Mirage black, Mirage blue

Display

Size
6.4-inch, 84.11% screen-to-body 6.5-inch, 86.06% screen-to-body
Type
Super AMOLED, 420 nits Super AMOLED
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI 2400x1080px, 20:9 ratio, 405 PPI
Protection
Corning Gorilla Glass 3 Corning Gorilla Glass 3
Features
Scratch-resistant glass, Proximity sensor

Hardware

System chip
Exynos 9611 (10 nm) Samsung Exynos 9611 (10 nm)
Processor
Octa-core
4x2.3GHz Cortex-A73
4x1.7G​Hz Cortex-A53 		Octa-core
4x2.3GHz Cortex-A73
4x1.7G​Hz Cortex-A53
GPU
Mali-G72 MP3 Mali-G72 MP3
Memory
4GB (LPDDR4)/64GB
6GB/128GB 		6GB (LPDDR4)/128GB (UFS 2.1)
8GB/128GB
Storage expansion
microSDXC up to 512 GB microSDXC up to 512 GB
OS
Android (11, 10) Android (11, 10)

Battery

Type
6000 mAh, Li - Polymer 6000 mAh
Charging
Fast charging Fast charging
Reverse wired charging
Charge speed
Wired: 25.0W

Camera

Rear
Triple camera Quad camera
Main camera
48 MP (PDAF)
Aperture size: F2.0
Focal length: 26 mm
Sensor size: 1/2"
Pixel size: 0.8 μm 		64 MP (PDAF)
Aperture size: F1.8
Focal length: 26 mm
Sensor size: 1/1.7"
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 		12 MP (Ultra-wide)
Aperture size: F2.2
Third camera
5 MP (Depth information)
Aperture size: F2.2 		5 MP (Macro)
Aperture size: F2.4
Fourth camera
5 MP (Depth information)
Aperture size: F2.4
Flash
LED LED
Video recording
4K UHD (30 fps), 1080p, 720p (240 fps)
EIS 		4K UHD (30 fps), 1080p (120 fps), 720p (480 fps)
Hyperlapse, EIS
Front
20 MP (HDR)
Video capture: 1080p 		32 MP
Video capture: 4K UHD (30 fps)

Connectivity & Features

Bluetooth
5.0 5.0
WLAN
a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac 		a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac
USB
Type-C, USB 2.0 Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, Proximity sensor Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Cell ID, Wi-Fi positioning
Other
NFC

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Loudspeaker
Features
Dolby Atmos
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM FM

Cellular

4G (FDD) Bands
1, 3, 5, 7, 8, 20 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 66
4G (TDD) Bands
38, 40, 41 38, 40, 41
3G Bands
1, 2, 5, 8 1, 2, 4, 5, 8
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

Alternative variants

with 128GB storage
Memory 6GB/128GB
with 8GB RAM
Memory 8GB
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