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Samsung Galaxy M31 Vs Samsung Galaxy M21 Specs Comparison


Samsung Galaxy M31 packs with Exynos 9611 chipset, 4 GB or 6 GB RAM, 64 GB or 128 GB storage, 6.4" Super AMOLED screen, 6000 mAh battery with 15W fast cahrging, quad rear camera with 64 MP main sensor + 8 MP ultra-wide lens + 5 MP depth-sensor lens + 5 MP macro lens, 32 MP front camera, and 210 $ price.

While Samsung Galaxy M21 packs with Exynos 9611 chipset, 4 GB or 6 GB RAM, 64 GB or 128 GB storage, 6.4" Super AMOLED screen, 6000 mAh battery with 15W fast charging, triple rear camera with 48 MP main sensor + 8 MP ultra-wide lens + 5 MP depth sensor, 20 MP front camera, and 175 $ price on launch.



Here’s an in-depth specifications comparison between Samsung Galaxy M31 Vs Samsung Galaxy M21.

Jump to:
  1. System  on  Chip (SOC)
  2. RAM
  3. Storage
  4. Display
  5. Rear Camera 
  6. Front Camera
  7. Battery
  8. Price
  9. Network



Samsung Galaxy M21
Samsung Galaxy M31
Brand and Model   
Brand and Model   
Brand 
Brand 
Samsung
Samsung
Model
Model
Galaxy M21
Galaxy M31
Model Alias
Model Alias

SM-M315F

SM-M315F/DS
Galaxy M21 Operating System 
Galaxy M31 Operating System 
Android 10
Android 10
User Interface (UI)
User Interface (UI)
One UI 2.0
One UI 2.0



Galaxy M21 System on  Chip (SOC) Galaxy M31 System on  Chip (SOC)
SOC
SOC
Samsung Exynos 7 Octa 9611
Samsung Exynos 7 Octa 9611
Process Technology  Process Technology 
10 nm 10 nm
CPU CPU
4x 2.3 GHz ARM Cortex-A73 4x 2.3 GHz ARM Cortex-A73
4x 1.7 GHz ARM Cortex-A53
4x 1.7 GHz ARM Cortex-A53
CPU Bits 
CPU Bits 
64 bit 64 bit
Instruction Set   Instruction Set  
ARMv8-A ARMv8-A
CPU Frequency 
2300 MHz 2300 MHz 
CPU Cores  CPU Cores 
8 8
GPU
GPU
ARM Mali-G72 MP3
ARM Mali-G72 MP3
 GPU Cores  GPU Cores
3 3



Galaxy M21 RAM Capacity
Galaxy M31 RAM Capacity
4 GB
4 GB 
6 GB
6 GB 
RAM Type   RAM Type  
LPDDR4X
LPDDR4X
RAM Channels  
RAM Channels  
Double channel Double channel



Galaxy M21 Storage
Galaxy M31 Storage
64 GB
64 GB  
128 GB 128 GB 
UFS 2.1
eMMC 5.1
Galaxy M21 Memory Cards Galaxy M31 Memory Cards
microSD microSD
microSDHC
microSDHC
microSDXC microSDXC



Galaxy M21 Display
Galaxy M31 Display
Type / Technology  Type / Technology 
Super AMOLED Super AMOLED
Diagonal Size  Diagonal Size 
6.4 in
6.4 in 
162.56 mm 162.56 mm 
16.26 cm 16.26 cm 
Width  Width 
2.68 in 2.68 in 
68.12 mm
68.12 mm 
6.81 cm 6.81 cm 
Height  Height 
5.81 in 5.81 in 
147.6 mm 147.6 mm 
14.76 cm 14.76 cm 
Aspect Ratio  Aspect Ratio 
2.167:1 2.167:1
Resolution  Resolution 
1080 x 2340 pixels 1080 x 2340 pixels
Pixel Density  Pixel Density 
403 ppi (pixels per inch) 403 ppi (pixels per inch)
158 ppcm (pixels per centimeter) 158 ppcm (pixels per centimeter)
Color Depth  Color Depth 
24 bit 24 bit
16777216 colors 16777216 colors
Display Area  Display Area 
84.48%
Other Features  Other Features 
Capacitive Capacitive
Multi-touch Multi-touch
Infinity U Display Infinity-U Display
2.5D curved glass screen
Corning Gorilla Glass 3 Corning Gorilla Glass
Peak brightness - 420 cd/m² Peak brightness - 420 cd/m²
78960:1 Widevine L1 certification
Galaxy M21 Sensors Galaxy M31 Sensors
Proximity Proximity
Accelerometer Accelerometer
Compass Compass
Gyroscope Gyroscope
Geomagnetic Geomagnetic
Fingerprint Fingerprint
Virtual Light Sensor Virtual Light Sensor



Galaxy M21 Rear Camera Galaxy M31 Rear Camera
Sensor Model Sensor Model
Samsung S5KGW1
Sensor type  Sensor type 
CMOS BSI (backside illumination) ISOCELL
ISO ISO
100 - 800
Sensor format Sensor format
1/2" 1/1.72"
Pixel size Pixel size
0.8 µm (micrometers) 0.8 µm (micrometers)
0.000800 mm
Aperture Aperture
f/2 f/1.8
Focal Length  Focal Length
3.58 mm 
26 mm *(35 mm / full frame) 27 mm   *(35 mm / full frame)
Flash Type Flash Type
LED LED
 Image Resolution   Image Resolution 
8000 x 6000 pixels 9280 x 6944 pixels
48 MP 64.44 MP 
Video resolution Video resolution
3840 x 2160 pixels 3840 x 2160 pixels
8.29 MP 8.29 MP 
Video FPS Video FPS
30 fps 30 fps (frames per second)
Features  Features 
Autofocus Autofocus
Continuous shooting Continuous shooting
Digital zoom Digital zoom
Geotagging Geotagging
Panorama Panorama
HDR HDR
Touch focus Touch focus
Face detection Face detection
White balance settings White balance settings
ISO settings ISO settings
Exposure compensation Exposure compensation
Self-timer Self-timer
Scene mode Scene mode
Phase detection autofocus (PDAF) Phase detection autofocus (PDAF)
Pixel size - 1.6 μm (4-in-1 pixel binning)
Sensor type - ISOCELL PLUS
Super Phase Detection
Secondary rear camera - 8 MP (ultra-wide angle) Secondary rear camera - 8 MP (ultra-wide angle)
Sensor size - 1/4" (#2)
Pixel size - 1.12 µm (#2)
Aperture size - f/2.2 (#2) Aperture size - f/2.2 (#2)
Angle of view - 123° (#2) Angle of view - 123° (#2)
Third rear camera - 5 MP (depth) Third rear camera - 5 MP (depth-sensing)
Aperture size - f/2.2 (#3) Aperture size - f/2.2 (#3)
Fourth rear camera - 5 MP (macro)
Aperture size - f/2.2 (#4)



Galaxy M21 Front Camera Galaxy M31 Front Camera
Sensor Model Sensor Model
Sony IMX616
Sensor Type Sensor Type
CMOS BSI (backside illumination) CMOS BSI (backside illumination)
Aperture Aperture
f/2 f/2
Sensor format Sensor format
1/2.8"
Pixel size
Pixel size
0.8 µm (micrometers)
Focal length  Focal length 
26 mm *(35 mm / full frame)
Image Resolution  Image Resolution 
6528 x 4896 pixels
20 MP 31.96 MP 
Video Resolution Video Resolution
1920 x 1080 pixels 3840 x 2160 pixels
2.07 MP 8.29 MP 
Video FPS Video FPS
30 fps 30 fps (frames per second)
Features  Features 
Face unlock Face unlock
Galaxy M21 Audio
Galaxy M31 Audio
Speaker Speaker
Loudspeaker Loudspeaker
Earpiece Earpiece
Dolby Atmos for stereo headsets Dolby Atmos
Widevine L1 Certification
Galaxy M21 Radio Galaxy M31 Radio
Yes Yes
RDS
Galaxy M21 Tracking /  Positioning  Galaxy M31 Tracking /  Positioning 
GPS GPS
A-GPS A-GPS
GLONASS GLONASS
BeiDou BeiDou
Galaxy M21 Wi-Fi Galaxy M31 Wi-Fi
802.11a (IEEE 802.11a-1999)
802.11b (IEEE 802.11b-1999) 802.11b (IEEE 802.11b-1999)
802.11g (IEEE 802.11g-2003) 802.11g (IEEE 802.11g-2003)
802.11n (IEEE 802.11n-2009) 802.11n (IEEE 802.11n-2009)
802.11n 5GHz
802.11ac (IEEE 802.11ac)
Dual band
Wi-Fi Hotspot Wi-Fi Hotspot
Wi-Fi Direct Wi-Fi Direct
Galaxy M21 Bluetooth Galaxy M31 Bluetooth
Version  Version 
5 5
Features  Features 
A2DP (Advanced Audio Distribution Profile) A2DP (Advanced Audio Distribution Profile)
LE (Low Energy) 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)
OPP (Object Push Profile)
PAN (Personal Area Networking Profile)
PBAP/PAB (Phone Book Access Profile)
HOGP



Galaxy M21 USB Galaxy M31 USB
Connector Type   Connector Type  
USB Type-C USB Type-C
Version Version
2 2
Features  Features 
Charging Charging
Mass storage Mass storage
On-The-Go On-The-Go
Galaxy M21 Headphone Jack Galaxy M31 Headphone Jack
Yes Yes
Galaxy M21 Connectivity  Connectivity
Computer sync Computer sync
OTA sync OTA sync
Tethering Tethering
ANT+
Galaxy M21 Browser Galaxy M31 Browser
HTML HTML
HTML5 HTML5
CSS 3 CSS 3
Galaxy M21 Audio File Formats /  Codecs Galaxy M31 Audio File Formats /  Codecs
AAC (Advanced Audio Coding) AAC (Advanced Audio Coding)
AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga) AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga)
AMR-WB (Adaptive Multi-Rate Wideband, .awb) AMR-WB (Adaptive Multi-Rate Wideband, .awb)
eAAC+ / aacPlus v2 / HE-AAC v2 eAAC+ / aacPlus v2 / HE-AAC v2
FLAC (Free Lossless Audio Codec, .flac) FLAC (Free Lossless Audio Codec, .flac)
M4A (MPEG-4 Audio, .m4a) M4A (MPEG-4 Audio, .m4a)
MIDI MIDI
MP3 (MPEG-2 Audio Layer II, .mp3) MP3 (MPEG-2 Audio Layer II, .mp3)
OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus) OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus)
WMA (Windows Media Audio, .wma) WMA (Windows Media Audio, .wma)
WAV (Waveform Audio File Format, .wav, .wave) WAV (Waveform Audio File Format, .wav, .wave)
Galaxy M21 Video File Formats /  Codecs Galaxy M31 Video File Formats /  Codecs
3GPP (3rd Generation Partnership Project, .3gp) 3GPP (3rd Generation Partnership Project, .3gp)
3GPP2 (3rd Generation Partnership Project 2, .3g2) 3GPP2 (3rd Generation Partnership Project 2, .3g2)
AVI (Audio Video Interleaved, .avi) AVI (Audio Video Interleaved, .avi)
Flash Video (.flv, .f4v, .f4p, .f4a, .f4b) Flash Video (.flv, .f4v, .f4p, .f4a, .f4b)
H.263 H.263
H.264 / MPEG-4 Part 10 / AVC video H.264 / MPEG-4 Part 10 / AVC video
H.265 / MPEG-H Part 2 / HEVC H.265 / MPEG-H Part 2 / HEVC
MKV (Matroska Multimedia Container, .mkv .mk3d .mka .mks) MKV (Matroska Multimedia Container, .mkv .mk3d .mka .mks)
MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v) MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v)
VC-1 VC-1
VP8 VP8
VP9 VP9
WebM WebM
WMV (Windows Media Video, .wmv) WMV (Windows Media Video, .wmv)
WMV7 (Windows Media Video 7, .wmv) WMV7 (Windows Media Video 7, .wmv)
WMV8 (Windows Media Video 8, .wmv) WMV8 (Windows Media Video 8, .wmv)
Xvid Xvid



Galaxy M21 Battery Galaxy M31 Battery
Capacity Capacity
6000 mAh 6000 mAh 
Type  Type 
Li-Ion Li-Ion
Features  Features 
Fast charging Fast charging
Non-removable Non-removable
 Charger Output Power  Charger Output Power
5 V / 3 A 5 V   / 2 A 
9 V   / 1.67 A 
Galaxy M21 Launch Galaxy M31 Launch
Announced  Announced 
 2020, 19th March  2020, 25th February
Status Status
Release 23th March 2020 Release 5th March 2020



Galaxy M21 Price Galaxy M31 Price
4 GB + 64 GB = 175 $ 4 GB + 64 GB =  210 $
6 GB + 128 GB =  225 $
Galaxy M21 Design Galaxy M31 Design
Colors  Colors 
Midnight Blue Ocean Blue
Raven Black Space Black
Width  Width 
75.1 mm
7.51 cm
0.25 ft
2.96 in
Height  Height 
159 mm
15.9 cm
0.52 ft
6.26 in
Thickness  Thickness 
8.9 mm 8.9 mm 
0.89 cm 0.89 cm 
0.03 ft 0.03 ft
0.35 in 0.35 in 
Weight  Weight 
188 g 191 g
0.41 lbs 0.42 lbs
6.63 oz 6.74 oz
Volume  Volume 
106.27 cm³
6.45 in³
Body Materials Body Materials
Plastic Plastic
Galaxy M21 SIM Card Galaxy M31 SIM Card
SIM Card Type   SIM Card Type  
Nano-SIM (4FF - fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm) Nano-SIM (4FF - fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm)
Number of SIM Cards  Number of SIM Cards 
2 2
Features Features
Dual SIM stand-by Dual SIM stand-by)
Galaxy M21 Mobile Network Technology and Bandwidth Galaxy M31 Mobile Network Technology and Bandwidth
UMTS (384 kbit/s ) UMTS (384 kbit/s )
EDGE EDGE
GPRS GPRS
HSPA+ (HSUPA 5.76 Mbit/s , HSDPA 42 Mbit/s ) HSPA+ (HSUPA 5.76 Mbit/s , HSDPA 42 Mbit/s )
LTE LTE Cat 10 (102.0 Mbit/s , 452.2 Mbit/s )



Galaxy M21 Networks Galaxy M31 Networks
GSM GSM
GSM 850 MHz (B5) GSM 850 MHz
GSM 900 MHz (B8) GSM 900 MHz
GSM 1800 MHz (B3) GSM 1800 MHz
GSM 1900 MHz (B2) GSM 1900 MHz
UMTS UMTS
UMTS 850 MHz (B5) UMTS 850 MHz
UMTS 900 MHz (B8) UMTS 900 MHz
UMTS 1900 MHz (B2) UMTS 1900 MHz
UMTS 2100 MHz (B1) UMTS 2100 MHz
LTE LTE
LTE-FDD 800 MHz (B20)
LTE-FDD 850 MHz (B5) LTE 850 MHz
LTE-FDD 900 MHz (B8) LTE 900 MHz
LTE-FDD 1800 MHz (B3) LTE 1800 MHz
LTE-FDD 2100 MHz (B1) LTE 2100 MHz
LTE-FDD 2600 MHz (B7) LTE 2600 MHz
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)

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Galaxy Tab A 8.4 System on  Chip (SOC)SOCSamsung Exynos 7 Octa 7904Process Technology 14 nmCPU2x 1.8 GHz ARM Cortex-A736x 1.6 GHz ARM Cortex-A53CPU Bits 64 bitInstruction Set ARMv8-ACPU Frequency 1800 MHzCPU Cores 8GPUARM Mali-G71 MP2 GPU Cores2


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