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Samsung Galaxy A31 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.


Samsung Galaxy A31	Samsung Galaxy M21
Released · Apr 27, 2020	Released · Mar 23, 2020
6.4-inch · 2400x1080px	6.4-inch · 2340x1080px
Quad camera	Triple camera
4GB · 64GB	4GB · 64GB
5000 mAh	6000 mAh

Availability

Officially announced
Mar 24, 2020	Mar 18, 2020
Prices (MSRP)
€300

Design

Dimensions
6.27 x 2.88 x 0.34 inches 159.3 x 73.1 x 8.6 mm	6.26 x 2.96 x 0.35 inches 159.0 x 75.1 x 8.9 mm
Weight
6.53 oz (185.0 g)	6.63 oz (188.0 g)
Materials
Back: Plastic	Back: Plastic Frame: Plastic
Biometrics
Optical in-screen fingerprint	2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Prism Crush black, Prism Crush blue, Prism Crush red, Prism Crush white	Midnight blue, Raven black

Display

Size
6.4-inch, 84.88% screen-to-body	6.4-inch, 84.11% screen-to-body
Type
Super AMOLED, 60Hz	Super AMOLED, 420 nits
Resolution
2400x1080px, 20:9 ratio, 411 PPI	2340x1080px, 19.5:9 ratio, 403 PPI
Protection
	Corning Gorilla Glass 3
Features
	Scratch-resistant glass, Proximity sensor

Hardware

System chip
MediaTek Helio P65 MT6768 (12 nm)	Exynos 9611 (10 nm)
Processor
Octa-core 2x2.0GHz Cortex-A75 6x2.0GHz Cortex-A55	Octa-core 4x2.3GHz Cortex-A73 4x1.7GHz Cortex-A53
GPU
Mali-G52 MC2	Mali-G72 MP3
Memory
4GB (LPDDR4)/64GB (eMMC 5.1) 6GB/128GB	4GB (LPDDR4)/64GB 6GB/128GB
Storage expansion
microSDXC up to 512 GB	microSDXC up to 512 GB
OS
Android (10)	Android (11, 10)

Battery

Type
5000 mAh, Li - Polymer	6000 mAh, Li - Polymer
Charging
Fast charging	Fast charging
Charge speed
Wired: 15.0W

Camera

Rear
Quad camera	Triple camera
Main camera
48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" 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 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: F2.4	5 MP (Depth information) Aperture size: F2.2
Fourth camera
5 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
1080p (30 fps)	4K UHD (30 fps), 1080p, 720p (240 fps) EIS
Front
20 MP Video capture: 1080p	20 MP (HDR) Video capture: 1080p

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, Compass, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, 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
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 20	1, 3, 5, 7, 8, 20
4G (TDD) Bands
38, 40, 41	38, 40, 41
3G Bands
1, 2, 5, 8	1, 2, 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

Regulatory Approval

FCC approval
Date approved: Mar 08, 2020 FCC ID value: A3LSMA315GL
Measured SAR
Head: 0.53 W/kg Body: 0.56 W/kg Simultaneous Transmission: 1.42 W/kg Wireless Router: 0.65 W/kg Phablet: 0.89 W/kg

Alternative variants

with 128GB storage


Memory	6GB/128GB

with 128GB storage


Memory	6GB/128GB

Links

Full specifications
Samsung Galaxy A31 Specs	Samsung Galaxy M21 Specs