Samsung Galaxy M31 vs Samsung Galaxy A21 Specs Comparison

Availability

Officially announced
Feb 25, 2020	Apr 08, 2020
Prices (MSRP)
€240	$250

Design

Dimensions
6.27 x 2.96 x 0.35 inches 159.2 x 75.1 x 8.9 mm	6.61 x 3.02 x 0.32 inches 167.8 x 76.7 x 8.1 mm
Weight
6.74 oz / 191.0 g	6.81 oz / 193.0 g
Materials
Back: Plastic Frame: Plastic	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
Blue, Black, Red	Black

Display

Size
6.4-inch, 83.97% screen-to-body	6.5-inch, 79.20% screen-to-body
Type
Super AMOLED, 420 nits	IPS LCD, 60Hz
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI	1600x720px, 20:9 ratio, 270 PPI
Protection
Corning Gorilla Glass 3

Hardware

System chip
Exynos 9611 (10 nm)	Mediatek Helio P35 MT6765 (12 nm)
Processor
Octa-core 4x2.3GHz Cortex-A73 4x1.7G​Hz Cortex-A53	Octa-core 4x2.3GHz Cortex-A53 4x1.8G​Hz Cortex-A53
GPU
Mali-G72 MP3	PowerVR GE8320
Memory
6GB (LPDDR4)/64GB (UFS 2.1) 6GB/128GB	3GB (LPDDR4)/32GB (eMMC 5.1)
Storage expansion
microSDXC up to 512 GB	microSDXC up to 512 GB
OS
Android (11, 10)	Android (10)

Battery

Type
6000 mAh, Li - Polymer	4000 mAh, Li - Polymer
Charging
Fast charging	Fast charging
Charge speed
Wired: 15.0W	Wired: 15.0W

Camera

Rear
Quad camera	Quad camera
Main camera
64 MP (PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.7" Pixel size: 0.8 μm	16 MP (PDAF) Aperture size: F1.8 Sensor size: 1/3.06" Pixel size: 1 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 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	2 MP (Macro) Aperture size: F2.4
Fourth camera
5 MP (Depth information) Aperture size: F2.2	2 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
4K UHD (30 fps), 1080p, 720p (240 fps) Hyperlapse, EIS	1080p (30 fps)
Front
32 MP (HDR, Slow-motion videos) Video capture: 1080p	13 MP 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, Compass, Ambient light sensor, Proximity sensor
Hearing aid compatible
	M4/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC	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
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 66, 71
4G (TDD) Bands
38, 40, 41	38, 39, 40, 41
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes
SIM type
Nano SIM	Nano SIM
HD Voice
	Yes
VoLTE
Yes

Regulatory Approval

FCC approval
Date approved: Feb 07, 2020 FCC ID value: A3LSMM315F	Date approved: Apr 17, 2020 FCC ID value: ZCASMA215U
Measured SAR
Head: 0.42 W/kg Body: 0.41 W/kg Simultaneous Transmission: 1.54 W/kg Wireless Router: 0.74 W/kg	Head: 0.42 W/kg Body: 1.27 W/kg Simultaneous Transmission: 1.27 W/kg Wireless Router: 1.27 W/kg

Alternative variants

with 128GB storage

Memory	128GB

for Verizon

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

for Sprint

4G (FDD) Bands	2, 3, 4, 5, 7, 12, 13, 25, 26, 66, 71
4G (TDD) Bands	41

Discover more

Full Specs Samsung Galaxy M31 Specs

Full Specs Samsung Galaxy A21 Specs