Samsung Galaxy M21 vs Samsung Galaxy M31: Comparison

Comparison of features, performance, design, battery, camera and connectivity between the following smartphones: Samsung Galaxy M21 vs Samsung Galaxy M31. The complete information of specifications to decide which to buy.

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Technical data sheets
Samsung Galaxy M21Samsung Galaxy M21Global · 4GB · 64GB · M215F£ 137£ 145£ 150£ 153€ 158£ 160£ 166€ 167£ 169£ 169£ 173€ 173£ 176€ 177£ 178€ 184$ 190€ 191€ 195€ 195£ 197€ 199$ 202€ 202€ 206$ 209$ 214$ 222€ 227$ 231$ 235$ 235$ 240$ 244$ 249$ 274zł 712zł 755zł 781zł 800zł 833zł 864zł 879zł 880zł 899zł 915zł 932zł 1,026R$ 1,065R$ 1,130R$ 1,169R$ 1,196R$ 1,246R$ 1,293R$ 1,315R$ 1,317R$ 1,345R$ 1,369R$ 1,398R$ 1,536MX$ 3,968MX$ 4,209MX$ 4,355MX$ 4,458MX$ 4,641MX$ 4,816MX$ 4,899MX$ 4,906MX$ 5,012MX$ 5,099MX$ 5,180MX$ 5,722₹ 13,999руб 14,186₹ 14,847руб 15,046₹ 15,362руб 15,567₹ 15,725руб 15,935₹ 16,372руб 16,591₹ 16,989руб 17,217₹ 17,282₹ 17,307руб 17,513руб 17,539₹ 17,680руб 17,917₹ 17,988руб 18,229₹ 18,358руб 18,587₹ 20,184руб 20,454
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Samsung Galaxy M31Samsung Galaxy M31Global · 6GB · 64GB · M315F£ 156€ 180£ 188£ 188£ 188£ 188£ 199£ 216$ 217€ 219€ 219€ 219€ 219€ 229£ 234£ 238£ 245€ 250$ 266$ 266$ 266$ 266€ 270€ 275$ 276€ 283$ 301$ 326$ 332$ 341zł 814zł 986zł 986zł 986zł 986zł 1,035zł 1,128R$ 1,217zł 1,219zł 1,242zł 1,277R$ 1,440R$ 1,440R$ 1,440R$ 1,440R$ 1,548R$ 1,688R$ 1,824R$ 1,862R$ 1,910MX$ 4,535MX$ 5,437MX$ 5,437MX$ 5,437MX$ 5,437MX$ 5,768MX$ 6,288MX$ 6,798MX$ 6,902MX$ 7,118₹ 15,999руб 16,213₹ 19,257₹ 19,257₹ 19,257₹ 19,257руб 19,589руб 19,589руб 19,589руб 19,589₹ 20,346руб 20,618₹ 22,183руб 22,480₹ 23,980руб 24,301₹ 24,461руб 24,767₹ 25,108руб 25,444
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Basics

Score
Ki Price/Quality
Score		 8.0 Ki Price/Quality
Score 		8.4 Ki Price/Quality
Score
Design and Screen score 6.9 Design & Materials 6.9 Design & Materials
Performance and Hardware score 6.9 Performance & Hardware 7.0 Performance & Hardware
Camera score 6.5 Camera 7.7 Camera
Connectivity score 7.1 Connectivity 7.9 Connectivity
Battery score 8.9 Battery 8.9 Battery

User reviews
User score --
8.9
13 opinions

Summary
Inches 6.4" 6.4"
Resolution FHD+ FHD+
Usable surface 84% useful 84% useful
Aspect Ratio 19.5:9 19.5:9
Dimensions 75.1 mm
159.0 mm
8.9 mm 		75.1 mm
159.2 mm
8.9 mm
Weight 188 g 191 g
Micro Exynos 9611
Octa-Core 		Exynos 9611
Octa-Core
RAM 4 GB RAM 6 GB RAM
Storage 64 GB 64 GB
AnTuTu 186.282
v8 		180.011
v8
Battery 6000 mAh 6000 mAh
Main Camera 1
48 Mpx · ƒ/2.0

2 3 		1
64 Mpx · ƒ/1.8
Bright S5KGW1
2 3 4
Selfie Camera SELF 20 Mpx · ƒ/2.2 SELF 32 Mpx · ƒ/2.0
Bands
OS Android 10 Q Android 10 Q

Brand
Brand Samsung Samsung
Aliases SM-M215FZBDTHL, SM-M215FZ SM-M315F, SM-M315F/DS

Release Date
Release date March 2020,
11 months ago 		February 2020,
1 year ago
State On Sale On Sale
Market Global Global

Design & Materials

Structure

Samsung Galaxy M21
Samsung Galaxy M31
Samsung Galaxy M21
Samsung Galaxy M31
Size
75.1 mm
159.0 mm
8.9 mm
See more details
 Print 3D Model
75.1 mm
159.2 mm
8.9 mm
See more details
 Print 3D Model
Weight 188 g 191 g
Usable surface 84 % 84 %
Materials Plastic Plastic
Resistance - -
Colors
Black

Blue

Green
Black

Blue

Screen
Diagonal 6.4" 6.4"
Type Super Amoled Super Amoled
Aspect Ratio 19.5:9 19.5:9
Resolution FHD+
1080 x 2340 px 		FHD+
1080 x 2340 px
Density 403 Pixels per inch 403 Pixels per inch

Others

Others
  • Water Drop Notch
  • Peak brightness - 420 cd/m²
  • Corning Gorilla Glass 3
  • Capacitive
  • Multi-touch
  • Frameless
  • Infinity-U display
  • Water Drop Notch
  • Peak brightness - 420 cd/m²
  • Corning Gorilla Glass 3
  • Capacitive
  • Multi-touch
  • Frameless
  • Infinity-U display

User reviews

Is it a drop-resistant and scratch-resistant smartphone?
--
6.8
Do you think it's a nice phone?
--
7.7
Is it comfortable?
--
8.2
Can you see it well in the sunlight?
--
8.9
Number of reviews
--
13 opinions

Performance & Hardware

Processor
Model Samsung Exynos 7 Octa 9611 Samsung Exynos 7 Octa 9611
CPU 4x Cortex-A73 2.3 GHz + 4x Cortex-A53 1.67 GHz 4x Cortex-A73 2.3 GHz + 4x Cortex-A53 1.67 GHz
Type Octa-Core Octa-Core
Manufacturing 10 nm 10 nm
Frequency 2.3 GHz 2.3 GHz
64 Bits Yes Yes

Graphics
GPU ARM Mali-G72 MP3 ARM Mali-G72 MP3

RAM
RAM 4 GB 6 GB
Type LPDDR4X RAM LPDDR4X RAM

Antutu
Score
186.282
Antutu v8
Overall performance better than 77% of devices
See more details
180.011
Antutu v8
Overall performance better than 76% of devices
See more details

Storage
Capacity 64 GB 64 GB
Type UFS Storage 2.1 UFS Storage 2.1
SD Slot Yes ,
Independent SD slot 		Yes ,
Independent SD slot

Security
Fingerprint Yes, in the back Yes, in the back

Sensors
Sensors
  • Fingerprint
  • Proximity
  • Accelerometer
  • Compass
  • Gyroscope
  • Geomagnetic
  • Fingerprint
  • Proximity
  • Accelerometer
  • Compass
  • Gyroscope
  • Geomagnetic

Others
Notifications LED -- --
Cooling system No No
Gaming buttons No No

User reviews

Does it have good sound?
--
6.6
Does it work smoothly in everyday use?
--
9.3
What's your experience been with demanding games?
--
8.5
Number of reviews
--
13 opinions

Camera

Main
No. of cameras Triple rear camera Quad rear camera
1
Camera type

Standard

Standard
Resolution 48 Mpx 64 Mpx
Sensor Samsung Samsung Bright S5KGW1
Type CMOS ISOCELL
Aperture ƒ/ 2.0 ƒ/ 1.8
ISO -- 100 - 800
Pixel size -- 0.80 µm
Pixel Binning -- 1-4 (2x2)
Sensor size -- 1/1.72
2
Camera type

Wide Angle lens

Wide Angle lens
Resolution
8 Mpx
8 Mpx
Sensor
Unknown
Unknown
Type
--
--
Aperture
ƒ/ 2.2
ƒ/ 2.2
ISO
--
--
Pixel size
--
--
Pixel Binning
--
--
Sensor size
--
--
3
Camera type

Portrait mode (depth)

Portrait mode (depth)
Resolution
5 Mpx
5 Mpx
Sensor
Unknown
Unknown
Type
--
--
Aperture
ƒ/ 2.2
ƒ/ 2.2
ISO
--
--
Pixel size
--
--
Pixel Binning
--
--
Sensor size
--
--
4
Camera type
--

Macro lens
Resolution
5 Mpx
Sensor
Unknown
Type
--
Aperture
ƒ/ 2.4
ISO
--
Pixel size
--
Pixel Binning
--
Sensor size
--

Features
Flash LED LED
Optical Stabilisation No No
Slow Motion Video Yes,
240 fps 		No,
30 fps
Others
  • 4K Video
  • Digital zoom
  • Triple camera
  • Autofocus
  • Touch focus
  • Continuous shooting
  • Geotagging
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • 4K Video
  • Digital zoom
  • Quadruple camera
  • Autofocus
  • Touch focus
  • Continuous shooting
  • Geotagging
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer

Selfie
SELF
Camera type

Dedicated

Dedicated
Resolution 20 Mpx 32 Mpx
Sensor Unknown Sony IMX616
Type CMOS CMOS
Aperture ƒ/ 2.2 ƒ/ 2.0
ISO -- --
Pixel size -- 0.80 µm
Pixel Binning -- 1-4 (2x2)
Sensor size -- 1/2.8
Others
--
--

DxOMark Score
DxOMark Score -- --

User reviews

Quality of daytime photos
--
9.3
Quality of nighttime photos
--
7.7
Quality of selfies
--
8.5
Does it have a powerful flash?
--
8.4
Number of reviews
--
13 opinions

Connectivity

Network compatibility

5G -- --
4G LTE
  • B1 (2100)
  • B3 (1800)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B20 (800)
  • B38 (TDD 2600)
  • B40 (TDD 2300)
  • B41 (TDD 2500)
  • B1 (2100)
  • B2 (1900)
  • B3 (1800)
  • B4 (1700/2100 AWS 1)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B12 (700)
  • B13 (700)
  • B17 (700)
  • B20 (800)
  • B26 (850)
  • B28b (700)
  • B28a (700)
  • B38 (TDD 2600)
  • B40 (TDD 2300)
  • B41 (TDD 2500)
  • B66 (1700/2100)
3G
  • B1 (2100)
  • B2 (1900)
  • B5 (850)
  • B8 (900)
  • B1 (2100)
  • B2 (1900)
  • B4 (1700/2100 AWS A-F)
  • B5 (850)
  • B8 (900)
2G
  • B2 (1900)
  • B3 (1800)
  • B5 (850)
  • B8 (900)
  • B2 (1900)
  • B3 (1800)
  • B5 (850)
  • B8 (900)

SIM card
Dual SIM Dual Sim Dual Standby Dual Sim Dual Standby
Type
  • Nano SIM
  • Nano SIM
  • Nano SIM
  • Nano SIM

Wi-Fi
Wi-Fi
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
Others
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct

Bluetooth
Version Bluetooth 5.0 Bluetooth 5.0
Others
  • A2DP (Advanced Audio Distribution Profile)
  • AVRCP (Audio/Visual Remote Control Profile)
  • DIP (Device ID Profile)
  • HFP (Hands-Free Profile)
  • HID (Human Interface Profile)
  • HSP (Headset Profile)
  • MAP (Message Access Profile)
  • PAN (Personal Area Networking Profile)
  • OPP (Object Push Profile)
  • PBAP/PAB (Phone Book Access Profile)
  • HOGP
  • A2DP (Advanced Audio Distribution Profile)
  • AVRCP (Audio/Visual Remote Control Profile)
  • DIP (Device ID Profile)
  • HFP (Hands-Free Profile)
  • HID (Human Interface Profile)
  • HSP (Headset Profile)
  • MAP (Message Access Profile)
  • PAN (Personal Area Networking Profile)
  • OPP (Object Push Profile)
  • PBAP/PAB (Phone Book Access Profile)
  • HOGP

Navigation
Navigation
  • GPS
  • A-GPS
  • GLONASS
  • Beidou
  • Galileo
  • GPS
  • A-GPS
  • GLONASS
  • Beidou

USB
USB
  • Charging
  • Mass Storage
  • USB On-The-Go (OTG)
  • USB Type C
  • Charging
  • Mass Storage
  • USB On-The-Go (OTG)
  • USB Type C

SAR
European measurement

The European Union sets a limit of 2 W/kg averaged over 10 grams of tissue.

 0.468 W/Kg on head
-- W/Kg on body 		0.482 W/Kg on head
1.127 W/Kg on body
American measurement

The FCC limit is 1.6 W/kg measured in a volume of 1 gram of tissue

 -- --

Others
Others
  • NFC
  • Audio Jack
  • Radio FM
  • Computer sync
  • OTA sync
  • Tethering.
  • VoLTE
  • NFC
  • Audio Jack
  • Computer sync
  • OTA sync
  • Tethering.
  • VoLTE
  • ANT+

User reviews

Does it have good coverage for calls?
--
8.9
Quality of the GPS
--
8.7
And the WiFi?
--
8.9
Number of reviews
--
13 opinions

Battery

Battery
Capacity
6000 mAh
See more details
6000 mAh
See more details
Type Li-Ion Li-Ion
Fast charge Yes,
15.0W 		Yes,
15.0W
Others
  • Non-removable
  • Non-removable

User reviews

How long does the battery last?
--
  • 0%
    Less than half day
  • 0%
    Less than a day
  • 15%
    One day
  • 54%
    More than one day
  • 31%
    Two days or more
Number of reviews
--
13 opinions

Software

Software
Operating System
  • Android 10
    Android 10 Q, 1 year ago
  • Android 10
    Android 10 Q, 1 year ago
Google Services (official) Yes Yes

User reviews

Did it come with preinstalled applications?
--
  • 0%
    It comes with a clean operating system
  • 77%
    It has preinstalled apps but they don't bother me
  • 23%
    It has preinstalled apps that I can't uninstall
Do you regularly receive updates?
--
  • 0%
    Never
  • 0%
    Once a year
  • 33%
    Every six months
  • 67%
    Every two months or less
Number of reviews
--
13 opinions

Prices

Prices

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Prices

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Others

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