Select City
TECH500

Samsung galaxy M30s vs Redmi Note 8 vs Samsung Galaxy A40

Key Feature Comparison

6.9

Samsung Galaxy M30s

Check Price
close
7.1

Redmi Note 8

Check Price
close
6.6

Samsung Galaxy A40

Check Price
close

At a Glance

Show differences only

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 GHz, Quad core, Kryo 260 + 1.8 GHz, Quad core, Kryo 260)

Qualcomm Snapdragon 665, Adreno 610

Octa core (1.8 GHz, Dual core, Cortex A73 + 1.6 GHz, Hexa Core, Cortex A53)

Samsung Exynos 7 Octa 7904, Mali-G71 MP2

6000 mAh

Li-ion, Fast, 15W

4000 mAh

Li-Polymer, Fast, 18W

3100 mAh

Li-ion

6.4 inches

403 ppi, FHD

6.3 inches

409 ppi, FHD

5.9 inches

437 ppi, FHD

Triple, 48MP + 8MP + 5MP

3840x2160 @ 30 fps

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

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

Dual, 16MP + 5MP

1920x1080 @ 30 fps

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

Detailed Specs

Screen Size

6.4 inches
6.3 inches
5.9 inches

Screen Type

Super AMOLED
IPS LCD
Super AMOLED

Screen Resolution

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

Pixel Density

403 ppi
409 ppi
437 ppi

Aspect Ratio

19.5:9
19.5:9
19.5:9

Screen Protection

No
Gorilla Glass 5
Gorilla Glass 3

Screen to Body Ratio

91%
90%
85.33%

Screen Design

Regular notch
Waterdrop notch
Waterdrop notch

Screen Quality

FHD
FHD
FHD

Peak Brightness

420 nits
-
-

Phone Variants

4GB 64GB, 6GB 128GB, 4GB 128GB
4GB 64GB, 3GB 32GB, 6GB 128GB
4GB 64GB

Expandable Storage

Yes
Yes
Yes

RAM Type

LPDDR4X
LPDDR4X
LPDDR4X

Storage Type

UFS 2.1
eMMC 5.1
eMMC 5.1

Expandable Storage Capacity

Yes, 512 GB
Yes, 512 GB
Yes, 512 GB

OTG Support

Yes
Yes
-

Sensors

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

Operating System

Android v9.0 (Pie)
Android v9.0 (Pie)
Android v9.0 (Pie)

GPU

Mali-G72 MP3
Adreno 610
Mali-G71 MP2

Chipset

Samsung Exynos 9 Octa 9611
Qualcomm Snapdragon 665
Samsung Exynos 7 Octa 7904

CPU

Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2 GHz, Quad core, Kryo 260 + 1.8 GHz, Quad core, Kryo 260)
Octa core (1.8 GHz, Dual core, Cortex A73 + 1.6 GHz, Hexa Core, Cortex A53)

Custom User Interface

Samsung One UI
MIUI
-

Clock Speed

2.3 GHz
2 GHz
1.8 GHz

Architecture

64 bit
64 bit
64 bit

Process Technology

10 nm
11 nm
14 nm

Battery Capacity

6000 mAh
4000 mAh
3100 mAh

Battery Removable

No
No
No

Battery Type

Li-ion
Li-Polymer
Li-ion

Charger Type

Fast, 15W
Fast, 18W
-

USB Type-C

Yes
Yes
Yes

Fast Charging

Yes
Yes
-

Announced On

5-Sep-19
5-Aug-19
5-Mar-19

Market Status

Out of Stock
Available
Launched Globally

Brand

Samsung
Xiaomi
Samsung

Model Number

SM-M307FZWDINS
MZB8189IN
-

Price Status

Confirmed
Confirmed
Expected

Price

Rs. 15,900
Rs. 12,499
Rs. 19,500

GPS

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

Audio Features

Dolby Atmos
-
Active noise cancellation with dedicated mic

NFC

No
-
Yes

Network Support

4G
4G
4G

Bluetooth

Yes
Yes
Yes

FM Radio

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

SIM Slot(s)

Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM

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) / 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 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
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:...

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) / 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 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
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:...

Front Video Recording

1920x1080 @ 30 fps
1920x1080 @ 30 fps
1080p30fps

Front Camera Features

HDR
HDR, panorama
-

Front Camera Setup

Single, 16MP
Single, 13MP
Single, 25MP

Front Camera 1 Resolution

16 MP
13 MP
25 MP

Front Camera 1 Type

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

Front Aperture

f/2.0
f/2.0
f/2.0

Front Flash

No
-
No

Front Camera 1 Lens

-
1.12 micrometre pixel size
-

Weight

188 grams
188 grams
140 grams

Colors

Opal Black, Sapphire Blue, Pearl White
Nepture Blue, Moonlight White, Cosmic Purple, Space Black
Black, Blue, Orange, White

Build

Back: Plastic
Back: Gorilla Glass
Back: Plastic

Dimensions

159 x 75.1 x 8.9 mm
158.3 x 75.3 x 8.3 mm
144.4 x 69.2 x 7.9 mm

SAR Value

Head: 0.486 W/kg
Head: 1.13 W/kg, Body: 0.634 W/kg
-

OIS

No
No
No

Rear Flash

Yes, LED Flash
Yes, Dual LED Flash
Yes, LED Flash

Rear Video Recording

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

Rear Camera Features

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

Rear Camera Setup

Triple, 48MP + 8MP + 5MP
Quad, 48MP + 8MP + 2MP + 2MP
Dual, 16MP + 5MP

Rear Camera 1 Resolution

48 MP
48 MP
16 MP

Rear Camera 1 Type

f/2.0 (upto 4x Digital Zoom), Wide Angle (80 degree field-of-view) Primary Camera
f/1.79 Primary Camera
f/1.7 Primary Camera

Rear Camera 1 Lens

2" sensor size, 0.8 micrometre pixel size
2" sensor size, 0.8 micrometre pixel size
-

Rear Camera 2 Resolution

8 MP
8 MP
5 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 3 Resolution

5 MP
2 MP
-

Rear Camera 3 Type

f/2.2, Depth Camera
f/2.4, Macro Camera
-

Rear Sensor

ISOCELL Plus
ISOCELL Plus
-

Rear Aperture

f/2.0
f/1.79
f/1.7

Rear Camera 2 Lens

-
4.0" sensor size, 1.12 micrometre pixel size
-

Rear Camera 3 Lens

-
5.0" sensor size, 1.75 micrometre pixel size
-

Rear Camera 4 Resolution

-
2 MP
-

Rear Camera 4 Type

-
f/2.4, Depth Camera
-

Rear Camera 4 Lens

-
5.0" sensor size, 1.75 micrometre pixel size
-

Fingerprint Scanner

Yes
Yes
Yes

Fingerprint Scanner Position

Rear
Rear
Rear

Face Unlock

Yes
Yes
Yes
Turn your old phone into cash

You May Also Read

Vivo Mobile Price List
Xiaomi Mobile Price List
New Upcoming Mobile Phones June 2023
Best Mobile Phones Under 50000
Best Mobile Phones Under 45000

Recent News

Gmail Shopping Updates: New Purchases View, Relevant Promotions Tab
12th Sep 2025
Leak Alert! Specs Of iQOO 15 Revealed Ahead Of Launch
12th Sep 2025
How To Download BGMI 4.0 Update? Here Are The Steps
12th Sep 2025
BGMI 4.0 Brings Stepwell: First Battleground Created In India
12th Sep 2025
Vivo X300 Series Launch Date Revealed: Check The Specs
12th Sep 2025

Tips & Tricks

Apple A19 Pro vs Snapdragon 8 Elite: Which Processor Is Better? 
12th Sep 2025
How To Force Restart iPhone: Complete Trips And Tricks
5th Sep 2025
How To Report Fraudulent Mobile Connections With Sanchar Saathi?
1st Sep 2025
Google Pixel 10 Pro vs Samsung S25 Ultra: Which Flagship Phone To Buy?
28th Aug 2025
Best AI Video Prompts: Ready-To-Use Examples, Free Tools And More
28th Aug 2025

Popular Leaks

Realme Big Announcements: 15T Launch And 15000mAh Battery Phone
29th Aug 2025
POCO F7 Specs Leak, Will Launch With 7000mAh Battery
12th Jan 2025
iQOO and POCO to Enter Offline Market in India; Here’s When
23rd Nov 2021
iPhone 17 Pro And Pro Max Major Design Changes And Price Leaks
30th Aug 2025
OPPO Reno 14 Pro Leaks: New Design, Camera Details And Launch Hints
10th Apr 2025