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Samsung Galaxy M31 vs Xiaomi Mi 9 vs Samsung Galaxy M40

Key Feature Comparison

6.9

Samsung Galaxy M31

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6.8

Xiaomi Mi 9

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7.1

Samsung Galaxy M40

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At a Glance

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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 (2.84 GHz, Single core, Kryo 485 + 2.42 GHz, Tri core, Kryo 485 + 1.8 GHz, Quad core, Kryo 485)

Qualcomm Snapdragon 855, Adreno 640

Octa core (2 GHz, Dual core, Kryo 460 + 1.7 GHz, Hexa Core, Kryo 460)

Qualcomm Snapdragon 675, Adreno 612

6000 mAh

Li-ion, Fast, 15W

3300 mAh

Li-ion, Quick, v4.0

3500 mAh

Li-ion, Fast, 15W

6.4 inches

403 ppi, FHD

6.39 inches

403 ppi, FHD

6.3 inches

409 ppi, FHD

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

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

Triple, 48MP + 12MP + 16MP

3840x2160 @ 30 fps, 1920x1080 @ 60 fps, 1280x720 @ 120 fps

Triple, 32MP + 8MP + 5MP

3840x2160 @ 30 fps

4G

Dual SIM, GSM+GSM, Dual VoLTE

4G

Dual SIM, GSM+GSM, Dual VoLTE

4G

Dual SIM, GSM+GSM, Dual VoLTE

Detailed Specs

Screen Size

6.4 inches
6.39 inches
6.3 inches

Screen Type

Super AMOLED
AMOLED
TFT

Screen Resolution

1080 x 2340 pixels
1080 x 2340 pixels
1080 x 2340 pixels

Pixel Density

403 ppi
403 ppi
409 ppi

Aspect Ratio

19.5:9
19.5:9
19.5:9

Screen Protection

Gorilla Glass 3
Gorilla Glass 6
Gorilla Glass 3

Screen to Body Ratio

83.92%
90.70%
91.80%

Screen Design

Regular notch
Waterdrop notch
Punch hole

Screen Quality

FHD
FHD
FHD

Phone Variants

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

Expandable Storage

Yes
No
Yes

RAM Type

LPDDR4X
LPDDR4X
LPDDR4X

Storage Type

UFS 2.1
-
eMMC 5.1

Expandable Storage Capacity

Yes, 512 GB
-
Yes, 512 GB

OTG Support

Yes
-
Yes

Sensors

Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Operating System

Android v10 (Q)
Android v9.0 (Pie)
Android v9.0 (Pie)

GPU

Mali-G72 MP3
Adreno 640
Adreno 612

Chipset

Samsung Exynos 9 Octa 9611
Qualcomm Snapdragon 855
Qualcomm Snapdragon 675

CPU

Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2.84 GHz, Single core, Kryo 485 + 2.42 GHz, Tri core, Kryo 485 + 1.8 GHz, Quad core, Kryo 485)
Octa core (2 GHz, Dual core, Kryo 460 + 1.7 GHz, Hexa Core, Kryo 460)

Custom User Interface

Samsung One UI
MIUI
Samsung One UI

Clock Speed

2.3 GHz
2.84 GHz
2 GHz

Architecture

64 bit
64 bit
64 bit

Process Technology

10 nm
-
11 nm

Battery Capacity

6000 mAh
3300 mAh
3500 mAh

Battery Removable

No
No
No

Battery Type

Li-ion
Li-ion
Li-ion

Charger Type

Fast, 15W
Quick, v4.0
Fast, 15W

USB Type-C

Yes
Yes
Yes

Fast Charging

Yes
Yes
Yes

Wireless Charging

-
Yes
-

Announced On

25-Feb-20
5-Feb-19
5-Jun-19

Market Status

Available
Launched Globally
Available

Brand

Samsung
Xiaomi
Samsung

Model Number

SM-M315FZKDINS
-
-

Price Status

Confirmed
Expected
Confirmed

Price

Rs. 15,999
Rs. 42,800
Rs. 15,999

GPS

Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass

Audio Features

Dolby Atmos
Active noise cancellation with dedicated mic
Dolby Atmos

NFC

No
Yes
Yes

Network Support

4G
4G
4G

Bluetooth

Yes
Yes
Yes

FM Radio

Yes
-
Yes

3.5mm Audio Jack

Yes
No
No

SIM Size

SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano (Hybrid)

Wi-Fi

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

Bluetooth Type

v5.0
v5.0
v5.0

Audio Jack

3.5 mm
USB Type-C
USB Type-C

SIM Slot(s)

Dual SIM, GSM+GSM, Dual VoLTE
Dual SIM, GSM+GSM, Dual VoLTE
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) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 17), 3G Bands: UMTS 1900 / 2100 / 8...
4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...

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) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 2100(band 34), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 17), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G...
4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...

Front Video Recording

1920x1080 @ 30 fps
1920x1080 @ 30 fps, 1280x720 @ 30 fps
1920x1080 @ 30 fps

Front Camera Features

HDR
HDR
HDR

Front Camera Setup

Single, 32MP
Single, 20MP
Single, 16MP

Front Camera 1 Resolution

32 MP
20 MP
16 MP

Front Camera 1 Type

f/2.0 Primary Camera
f/2.0 Primary Camera
f/2.0 Primary Camera

Front Camera 1 Lens

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

Front Sensor

Exmor RS
-
CMOS

Front Aperture

f/2.0
f/2.0
f/2.0

Front Flash

No
Yes, Screen flash
No

Weight

191 grams
173 grams
168 grams

Colors

Black, Blue
Deep Gray, Holographic Illusion Blue, Holographic Illusion
Midnight Blue, Seawater Blue, Cocktail Orange

Build

Back: Plastic
Back glass (Gorilla Glass 5), aluminum frame (7000 series)
Back: Plastic

Dimensions

159.2 x 75.1 x 8.9 mm
157.5 x 74.6 x 7.6 mm
155.3 x 73.9 x 7.9 mm

SAR Value

Head: 0.383 W/kg
-
Head: 0.200 W/kg

OIS

No
-
No

Rear Flash

Yes, LED Flash
Yes, Dual-color LED Flash
Yes, LED Flash

Rear Video Recording

3840x2160 @ 30 fps, 1920x1080 @ 30 fps, 1280x720 @ 240 fps
3840x2160 @ 30 fps, 1920x1080 @ 60 fps, 1280x720 @ 120 fps
3840x2160 @ 30 fps

Rear Camera Features

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

Rear Camera Setup

Quad, 64MP + 8MP + 5MP + 5MP
Triple, 48MP + 12MP + 16MP
Triple, 32MP + 8MP + 5MP

Rear Camera 1 Resolution

64 MP
48 MP
32 MP

Rear Camera 1 Type

f/1.8 (upto 8x Digital Zoom) Primary Camera
f/1.75 Primary Camera
f/1.7 (upto 8x Digital Zoom) Primary Camera

Rear Camera 1 Lens

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

Rear Camera 2 Resolution

8 MP
12 MP
8 MP

Rear Camera 2 Type

f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.2 Telephoto (upto 2x Optical Zoom) Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera

Rear Camera 2 Lens

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

Rear Camera 3 Resolution

5 MP
16 MP
5 MP

Rear Camera 3 Type

f/2.4, Macro Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.2, Depth Camera

Rear Camera 3 Lens

25 mm focal length, 5.0" sensor size, 1.12 micrometre pixel size
1 micrometre pixel size
-

Rear Camera 4 Resolution

5 MP
-
-

Rear Camera 4 Type

f/2.2, Depth Camera
-
-

Rear Sensor

ISOCELL Plus
Exmor-RS CMOS Sensor
CMOS image sensor

Rear Aperture

f/1.8
f/1.75
f/1.7

Fingerprint Scanner

Yes
Yes
Yes

Fingerprint Scanner Position

Rear
On-Screen
Rear

Face Unlock

Yes
Yes
Yes

Fingerprint Scanner Type

-
Optical
-

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