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Samsung Galaxy A21S vs Samsung Galaxy M21 vs Samsung Galaxy M31

- Updated: 16th Jul 2020, 10:59 IST

Key Feature Comparison

Samsung Galaxy A21s

Samsung Galaxy M21

Samsung Galaxy M31

Show differences only

At a Glance

Octa core (2 GHz, Quad core, Cortex A55 + 2 GHz, Quad core, Cortex A55)

Samsung Exynos 8 Octa 850, Mali-G52 MP1

Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)

Samsung Exynos 9 Octa 9611, Mali-G72 MP3

Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)

Samsung Exynos 9 Octa 9611, Mali-G72 MP3

5000 mAh

Li-ion, Fast, 15W

6000 mAh

Li-ion, Fast, 15W

6000 mAh

Li-ion, Fast, 15W

6.5 inches

270 ppi

6.4 inches

403 ppi, FHD

6.4 inches

403 ppi, FHD

Quad, 48MP + 8MP + 2MP + 2MP

1920x1080 @ 30 fps

Triple, 48MP + 8MP + 5MP

3840x2160 @ 30 fps, 1920x1080 @ 30 fps

Quad, 64MP + 8MP + 5MP + 5MP

3840x2160 @ 30 fps, 1920x1080 @ 30 fps, 1280x720 @ 240 fps

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM, Dual VoLTE

Detailed Specs

Screen Size

6.5 inches

6.4 inches

6.4 inches

Screen Type

TFT

Super AMOLED

Super AMOLED

Screen Resolution

720 x 1600 pixels

1080 x 2340 pixels

1080 x 2340 pixels

Pixel Density

270 ppi

403 ppi

403 ppi

Aspect Ratio

20:09

19.5:9

19.5:9

Screen to Body Ratio

82.75%

91%

83.92%

Screen Design

Punch hole

Waterdrop notch

Regular notch

Screen Protection

-

Gorilla Glass 3

Gorilla Glass 3

Screen Quality

-

FHD

FHD

Peak Brightness

-

420 nits

-

Phone Variants

6GB 64GB, 4GB 64GB, 6GB 128GB

4GB 64GB, 6GB 128GB

6GB 64GB, 8GB 128GB, 6GB 128GB

Expandable Storage

Yes

Yes

Yes

RAM Type

LPDDR4X

LPDDR4X

LPDDR4X

Storage Type

eMMC 5.1

UFS 2.1

UFS 2.1

Expandable Storage Capacity

Yes, 512 GB

Yes, 512 GB

Yes, 512 GB

OTG Support

Yes

Yes

Yes

Sensors

Light sensor, Proximity sensor, Accelerometer, Gyroscope

Light sensor, Proximity sensor, Accelerometer, Gyroscope

Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Operating System

Android v10 (Q)

Android v10 (Q)

Android v10 (Q)

GPU

Mali-G52 MP1

Mali-G72 MP3

Mali-G72 MP3

Chipset

Samsung Exynos 8 Octa 850

Samsung Exynos 9 Octa 9611

Samsung Exynos 9 Octa 9611

CPU

Octa core (2 GHz, Quad core, Cortex A55 + 2 GHz, Quad core, Cortex A55)

Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)

Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)

Custom User Interface

Samsung One UI

Samsung One UI

Samsung One UI

Clock Speed

2 GHz

2.3 GHz

2.3 GHz

Architecture

64 bit

64 bit

64 bit

Process Technology

8 nm

10 nm

10 nm

Battery Capacity

5000 mAh

6000 mAh

6000 mAh

Battery Removable

No

No

No

Battery Type

Li-ion

Li-ion

Li-ion

Charger Type

Fast, 15W

Fast, 15W

Fast, 15W

USB Type-C

Yes

Yes

Yes

Fast Charging

Yes

Yes

Yes

Announced On

15-May-20

18-Mar-20

25-Feb-20

Market Status

Available

Available

Available

Brand

Samsung

Samsung

Samsung

Model Number

SM-A217FZB1INS/SM-A217FZBGINS/SM-A217FZB5INS

SM-M215FZKDINS

SM-M315FZKDINS

Price Status

Confirmed

Confirmed

Confirmed

Price

Rs. 13,999

Rs. 13,499

Rs. 15,999

GPS

Yes A-GPS, Glonass

Yes A-GPS, Glonass

Yes A-GPS, Glonass

NFC

No

No

No

Network Support

4G

4G

4G

Bluetooth

Yes

Yes

Yes

3.5mm Audio Jack

Yes

Yes

Yes

SIM Size

SIM1: Nano, SIM2: Nano

SIM1: Nano, SIM2: Nano

SIM1: Nano, SIM2: Nano

Wi-Fi

Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz

Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz

Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz

Bluetooth Type

v5.0

v5.0

v5.0

Audio Jack

3.5 mm

3.5 mm

3.5 mm

SIM Slot(s)

Dual SIM, GSM+GSM

Dual SIM, GSM+GSM

Dual SIM, GSM+GSM, Dual VoLTE

eSIM

No

No

No

Wi-Fi Features

Wi-Fi Direct, Mobile Hotspot

Wi-Fi Direct, Mobile Hotspot

Wi-Fi Direct, Mobile Hotspot

VoLTE

Yes

Yes

Yes

SIM 1 Bands

4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800...

4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...

4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...

SIM 2 Bands

4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800...

4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...

4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...

Audio Features

-

Dolby Atmos

Dolby Atmos

Front Video Recording

1920x1080 @ 30 fps

1920x1080 @ 30 fps

1920x1080 @ 30 fps

Front Camera Setup

Single, 13MP

Single, 20MP

Single, 32MP

Front Camera 1 Resolution

13 MP

20 MP

32 MP

Front Camera 1 Type

f/2.2 Primary Camera

f/2.2 Primary Camera

f/2.0 Primary Camera

Front Camera 1 Lens

3.1" sensor size, 1.12 micrometre pixel size

26 mm focal length

26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size

Front Aperture

f/2.2

f/2.2

f/2.0

Front Flash

No

No

No

Front Camera Features

-

HDR

HDR

Front Sensor

-

CMOS

Exmor RS

Weight

192 grams

188 grams

191 grams

Colors

Black, Blue, White

Midnight Blue, Raven Black

Black, Blue

Build

Back: Plastic

Back: Plastic

Back: Plastic

Dimensions

163.7 x 75.3 x 8.9 mm

159 x 75.1 x 8.9 mm

159.2 x 75.1 x 8.9 mm

SAR Value

Head: 0.831 W/kg

Head: 0.468 W/kg

Head: 0.383 W/kg

OIS

No

No

No

Rear Flash

Yes, LED Flash

Yes, LED Flash

Yes, LED Flash

Rear Video Recording

1920x1080 @ 30 fps

3840x2160 @ 30 fps, 1920x1080 @ 30 fps

3840x2160 @ 30 fps, 1920x1080 @ 30 fps, 1280x720 @ 240 fps

Rear Camera Features

8 x Digital Zoom, Auto Flash, Face detection, Touch to focus

4 x Digital Zoom, Auto Flash, Face detection, Touch to focus

8 x Digital Zoom, Auto Flash, Face detection, Touch to focus

Rear Camera Setup

Quad, 48MP + 8MP + 2MP + 2MP

Triple, 48MP + 8MP + 5MP

Quad, 64MP + 8MP + 5MP + 5MP

Rear Camera 1 Resolution

48 MP

48 MP

64 MP

Rear Camera 1 Type

f/2.0 (upto 8x Digital Zoom), Wide Angle Primary Camera

f/2.0 (upto 4x Digital Zoom) Primary Camera

f/1.8 (upto 8x Digital Zoom) Primary Camera

Rear Camera 1 Lens

26 mm focal length, 2" sensor size, 0.8 micrometre pixel size

26 mm focal length, 2" sensor size, 0.8 micrometre pixel size

26 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size

Rear Camera 2 Resolution

8 MP

8 MP

8 MP

Rear Camera 2 Type

f/2.2, Wide Angle, Ultra-Wide Angle Camera

f/2.2, Wide Angle, Ultra-Wide Angle Camera

f/2.2, Wide Angle, Ultra-Wide Angle Camera

Rear Camera 2 Lens

4.0" sensor size, 1.12 micrometre pixel size

12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size

12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size

Rear Camera 3 Resolution

2 MP

5 MP

5 MP

Rear Camera 3 Type

f/2.4, Macro Camera

f/2.2, Depth Camera

f/2.4, Macro Camera

Rear Camera 4 Resolution

2 MP

-

5 MP

Rear Camera 4 Type

f/2.4, Depth Camera

-

f/2.2, Depth Camera

Rear Aperture

f/2.0

f/2.0

f/1.8

Rear Sensor

-

CMOS image sensor

ISOCELL Plus

Fingerprint Scanner

Yes

Yes

Yes

Fingerprint Scanner Position

Rear

Rear

Rear

Face Unlock

Yes

Yes

Yes

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