Samsung Galaxy M31 vs Samsung Galaxy A21s Specs Comparison

Design

Dimensions
6.27 x 2.96 x 0.35 inches 159.2 x 75.1 x 8.9 mm	6.44 x 2.96 x 0.35 inches 163.7 x 75.3 x 8.9 mm
Weight
6.74 oz (191.0 g)	6.77 oz (192.0 g)
Materials
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	Black, White, Blue, Red

Display

Size
6.4-inch	6.5-inch
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI	1600x720px, 20:9 ratio, 270 PPI
Technology
Super AMOLED	TFT
Screen-to-body
83.97 %	82.94 %
Peak brightness
420 cd/m2 (nit)
Features
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor	Proximity sensor

Hardware

System chip
Exynos 9611 (10 nm)	Samsung Exynos 850
Processor
Octa-core 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53	Octa-core 8x 2.0GHz Cortex-A55
GPU
Mali-G72 MP3	Mali-G76
Memory
6GB (LPDDR4)/64GB (UFS 2.1)	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	5000 mAh, Li - Polymer
Charging
Fast charging	Fast charging
Charge speed
Wired: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

Untested

Browsing

Untested

Video

11h 9min

Gaming

7h 48min

Learn more on our PhoneArena Battery Test Results page

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	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 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
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	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, 12, 13, 17, 20, 26, 28, 66(AWS-3)	Bands 1, 2, 3, 5, 7, 8, 20, 28
4G (TDD)
Bands 38, 40, 41	Bands 38, 40, 41
3G
Bands 1, 2, 4, 5, 8	Bands 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
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	€ 240
In The Box
15W fast charger, Data cable, Ejection pin, User Manual

Availability

Officially announced
Feb 25, 2020	May 15, 2020

Alternative variants

with 128GB storage

Memory	128GB

with 4GB RAM

Memory	4GB/64GB

with 6GB RAM

Memory	6GB/64GB

Links

Full specifications
Samsung Galaxy M31 Specs	Samsung Galaxy A21s Specs
PhoneArena Review
	Samsung Galaxy A21s Review