Samsung Galaxy M31 vs Samsung Galaxy M21

Comparing the Samsung Galaxy M31 vs Samsung Galaxy M21 across performance, display, camera, battery, storage, expert reviews and user rating to help determine the better smartphone.

Here is the summary of the results:

Performance: Both Samsung Galaxy M31 and Samsung Galaxy M21 run at the same processing speed of 2.3 GHz.

Display: Both Samsung Galaxy M31 and Samsung Galaxy M21 offer the same screen size of 6.4 inches and feature the same Super AMOLED display.

Rear Camera: Samsung Galaxy M31 offers a higher rear camera resolution with 64 MP, while Samsung Galaxy M21 offers 48 MP, making Samsung Galaxy M31 better for rear camera photography.

Front Camera: Samsung Galaxy M31 offers a higher front camera resolution with 32 MP, while Samsung Galaxy M21 offers 20 MP, making Samsung Galaxy M31 better for front camera photography.

Battery: Samsung Galaxy M21 delivers longer battery life with 10h 20m, while Samsung Galaxy M31 delivers None, making Samsung Galaxy M21 the better pick for all day usage.

Storage: Both Samsung Galaxy M31 and Samsung Galaxy M21 offer the same internal storage of 64 GB.

Expert Review: The editorial team rates both Samsung Galaxy M31 and Samsung Galaxy M21 equally at 7.

User Rating: Samsung Galaxy M31 receives a higher user rating of 4.3, while Samsung Galaxy M21 has a rating of 4.2.

Samsung Galaxy M31

₹17,499

(Out of Stock)

Samsung Galaxy M21

₹14,980

@ Flipkart

Summary

Release Date

04 Mar, 2020

18 Mar, 2020

16 Jul, 2026

Performance


Samsung Exynos 9 Octa 9611	Samsung Exynos 9 Octa 9611	MediaTek Dimensity 6400
Octa Core (upto 2.3 GHz)	Octa Core (upto 2.3 GHz)	Octa Core (upto 2.5 GHz)
6 GB RAM	4 GB RAM	4 GB RAM

Display


6.4 inches (16.26 cm)	6.4 inches (16.26 cm)	6.67 inches (16.94 cm)
Super AMOLED	Super AMOLED	IPS LCD
1080x2340 px (FHD+)	1080x2340 px (FHD+)	720x1604 px (HD+)
60 Hz Refresh Rate	60 Hz Refresh Rate	120 Hz Refresh Rate

Rear Camera


64 MP Primary Camera	48 MP Primary Camera	50 MP Primary Camera
8 MP Ultra-Wide Angle Camera	8 MP Ultra-Wide Angle Camera	N/A
5 MP Macro Camera	5 MP Depth Camera	N/A
5 MP Depth Camera	N/A	N/A

Front Camera


32 MP	20 MP	8 MP

Battery


6000 mAh	6000 mAh	7000 mAh
15W Fast Charging	15W Fast Charging	30W Turbo Charging
No Wireless Charging	No Wireless Charging	N/A

Storage

64 GB	64 GB	64 GB
UFS 2.1	UFS 2.1	UFS 2.2

Expert Review

7.0/10

Read Expert Review

7.0/10

Read Expert Review

8.1/10

Pros

Terrific battery life
Attractive AMOLED display
Smooth software experience

Vivid and colour accurate display
Long-lasting battery
Decent day-time photography

Top-class battery life
Comfortable to hold
Loud stereo speakers
Performs well for daily use

Cons

Poor low light camera performance
Processor could be better
Uninspiring design

Higher refresh rate would have been nice
Dated waterdrop notch design
Slow charging speed

Limited OS upgrades
Primary camera may produce dull tones

User Ratings

4.3/5

(11,661 ratings)

4.2/5

(65,210 ratings)

4.2/5

(21 ratings)

Benchmarks (The higher, the better)

N/A	168,633 AnTuTu Score	570,353 AnTuTu Score
N/A	10h 20m Battery Life (PC Mark)	16h 49m Battery Life (PC Mark)

Compare Prices

Not Available in any store

₹14,980

@ Flipkart

₹19,999

@ Flipkart

Video

11 More Videos

1 Video

User Feedback

General

Launch Date

Mar 04, 2020

(Official)

Mar 18, 2020

(Official)

May 19, 2026

(Official)

Operating System

Android v10 (Q)

Android v16

OS Updates

N/A

1 Year

Security Updates

N/A

4 Year

3 Year

Custom UI

Samsung One UI

N/A

Performance

Performance Rating

Good

Chipset

Samsung Exynos 9 Octa 9611

MediaTek Dimensity 6400 MT6835

View Details

Processor

Octa core

2.3 GHz, Quad core, Cortex A73 1.7 GHz, Quad core, Cortex A53

Octa core

2.5 GHz, Dual core, Cortex A76 2 GHz, Hexa Core, Cortex A55

Architecture (The higher, the better)

64 bit

Fabrication (The lower, the better)

10 nm

6 nm

Graphics (GPU)

Mali-G72 MP3

Mali-G57 MC2

RAM

6 GB / 8 GB

4 GB / 6 GB

4 GB / 8 GB

RAM Type

LPDDR4X

Performance Test Results

AnTuTu Score (The higher, the better) AnTuTu benchmark measures overall performance of a phone by stress-testing CPU, GPU, RAM, etc.

N/A

168,633

570,353

Bootup Time (The lower, the better)

N/A

23.0 s

26.0 s

Gaming Test Results

Wild Life Extreme (The higher, the better) Wild Life Extreme is a classic mobile benchmark; it renders in 4K to test the peak performance of a wide range of devices.

N/A

383

Battery Drain* (The lower, the better)

N/A

3.0 %

N/A

Heating* (The lower, the better)

N/A

11.3 %

N/A

* after 30 mins of gaming

Display

Display Rating

Excellent

Display Type

Super AMOLED

IPS LCD

Screen Size

6.4 inches (16.26 cm)

6.67 inches (16.94 cm)

Resolution

1080x2340 px (FHD+)

720x1604 px (HD+)

Brightness

N/A

420 nits

N/A

Peak Brightness

N/A

1050 nits

Refresh Rate

60 Hz

120 Hz

Touch Sampling Rate

N/A

120 Hz

Aspect Ratio

19.5:9

20:9

Pixel Density

403 ppi

264 ppi

Screen to Body Ratio (calculated)

83.92 %

84.02 %

84.48 %

Screen Protection

Corning Gorilla

Corning Gorilla Glass 7i

Bezel-less Display

Yes with notch

Yes with waterdrop notch

Yes with punch-hole display

Screen to Body Ratio (claimed by the brand)

N/A

91 %

84.3 %

Design

Height

159.2 mm

159 mm

166.2 mm

Width

75.1 mm

76.50 mm

Thickness

8.9 mm

8.8 mm

Weight

191 grams

188 grams

215 grams

Build Material

Back: Plastic

Back: Vegan Leather

Water Resistance

N/A

Yes Splash proof IP64

Ruggedness

N/A

Dust proof

Rear Camera

Rear Camera Rating

Very Good

Good

Resolution

64 MP
Primary Camera8x Digital Zoomf/1.826 mm focal length 1/1.7" sensor size S5KGW1 ISOCELL Plus 0.8µm pixel size

48 MP
Primary Camera4x Digital Zoomf/2.026 mm focal length 1/2" sensor size CMOS image sensor 0.8µm pixel size

50 MP
Primary Cameraf/1.80.61µm pixel size

8 MP
f/2.2 Ultra-Wide Angle Camera12 mm focal length 1/4.0" sensor size 1.12µm pixel size

N/A

5 MP
f/2.4 Macro Camera25 mm focal length 1/5.0" sensor size 1.12µm pixel size

5 MP
f/2.2 Depth Camera

N/A

5 MP
f/2.2 Depth Camera

N/A

Autofocus

Yes Phase Detection Autofocus

OIS

N/A

Flash

Yes LED Flash

Yes Dual LED Flash

Image Resolution

9000 x 7000 Pixels

8000 x 6000 Pixels

N/A

Settings

Exposure compensation ISO control

N/A

Shooting Modes

Continuous Shooting
High Dynamic Range mode (HDR)

High Dynamic Range mode (HDR)

Camera Features

8 x Digital Zoom
Auto Flash
Face detection
Touch to focus

4 x Digital Zoom
Auto Flash
Face detection
Touch to focus

N/A

Video Recording

4k @30 fps
Full HD @30 fps
HD @240 fps

4k @30 fps
Full HD @30 fps

2k @30 fps

Front Camera

Front Camera Rating

Very Good

Resolution

32 MP
f/2.0 Primary Camera26 mm focal length 1/2.8" sensor size Exmor RS 0.8µm pixel size

20 MP
f/2.2 Primary Camera26 mm focal length CMOS

8 MP
f/2.0 Primary Camera1.12µm pixel size

Autofocus

N/A

Flash

Yes Screen flash

Video Recording

Full HD @30 fps

2k @30 fps

Battery

Battery Rating

Very Good

Capacity

6000 mAh

7000 mAh

Battery Type

Li-ion

N/A

TalkTime

Up to 48 Hours(4G)

N/A

Quick Charging

Yes 15W Fast Charging

Yes 30W Turbo Charging

Reverse Charging

N/A

Yes 6W Reverse Charging

Battery Test Results

Battery Life (PC Mark) (The higher, the better) PCMark Battery benchmark measures battery life of a phone with various activities such as web browsing, photo editing, writing, video editing, etc.

N/A

10h 20m

16h 49m

Charging Time (20% to 100%) (The lower, the better)

N/A

2h 9m 47s

1h 17m

Storage

Internal Storage

64 GB / 128 GB

Storage Type

UFS 2.1

UFS 2.2

Expandable Storage

Yes Up to 512 GB

Yes Up to 1 TB

Network & Connectivity

SIM Slot(s)

Dual SIM

SIM Type

SIM1: Nano SIM2: Nano

Network Support

5G Not Supported 4G

5G 4G

VoLTE

Yes

SIM 1

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)

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)

5G Bands:

FDD N1 / N3 / N5 / N7 / N8 / N20 / N26 / N28 / N71 / N75
TDD N38 / N40 / N41 / N77 / N78

N/A

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 3500(band 42)
FD-LTE 2100(band 1) / 1500(band 32) / 600(band 71) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 850(band 5) / 800(band 20) / 850(band 26)

SIM 2

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)

5G Bands:

FDD N1 / N3 / N5 / N7 / N8 / N20 / N26 / N28 / N71 / N75
TDD N38 / N40 / N41 / N77 / N78

N/A

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 3500(band 42)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 850(band 5) / 1500(band 32) / 800(band 20) / 600(Band 71) / 850(band 26)

SAR Value

Head: 0.383 W/kg

Head: 0.468 W/kg

N/A

Wi-Fi

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

Yes Wi-Fi 5 (802.11 a/b/g/n/ac)

Wi-Fi Features

Wi-Fi Direct Mobile Hotspot

Mobile Hotspot

Bluetooth

Yes v5.0

Yes v5.4

GPS

Yes with A-GPS Glonass

NFC

N/A

Multimedia

Stereo Speakers

N/A

Yes

Audio Jack

3.5 mm

3.5 mm, USB Type-C

Sensors

Fingerprint Sensor

Yes

Fingerprint Sensor Position

Rear

Side

Other Sensors

Light sensor Proximity sensor Accelerometer Compass Gyroscope

Light sensor Proximity sensor Accelerometer Gyroscope

Proximity sensor Accelerometer Compass Gyroscope

Compare Prices

Not Available in any store

₹14,980

@ Flipkart

₹19,999

@ Flipkart