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Samsung Galaxy M21 vs Samsung Galaxy M30S vs Xiaomi Redmi 7

Key Feature Comparison

6.8

Samsung Galaxy M21

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6.9

Samsung Galaxy M30s

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6.4

Xiaomi Redmi 7

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

Samsung Exynos 9 Octa 9611, Mali-G72 MP3

Octa core (1.8 GHz, Quad core, Kryo 250 + 1.8 GHz, Quad core, Kryo 250)

Qualcomm Snapdragon 632, Adreno 506

6000 mAh

Li-ion, Fast, 15W

6000 mAh

Li-ion, Fast, 15W

4000 mAh

Li-Polymer

6.4 inches

403 ppi, FHD

6.4 inches

403 ppi, FHD

6.26 inches

269 ppi

Triple, 48MP + 8MP + 5MP

3840x2160 @ 30 fps, 1920x1080 @ 30 fps

Triple, 48MP + 8MP + 5MP

3840x2160 @ 30 fps

Dual, 12MP + 2MP

1920x1080 @ 30 fps, 1280x720 @ 30 fps

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM, Dual VoLTE

Detailed Specs

Screen Size

6.4 inches
6.4 inches
6.26 inches

Screen Type

Super AMOLED
Super AMOLED
IPS LCD

Screen Resolution

1080 x 2340 pixels
1080 x 2340 pixels
720 x 1520 pixels

Pixel Density

403 ppi
403 ppi
269 ppi

Aspect Ratio

19.5:9
19.5:9
-

Screen Protection

Gorilla Glass 3
No
Gorilla Glass 5

Screen to Body Ratio

91%
91%
86.80%

Screen Design

Waterdrop notch
Regular notch
Waterdrop notch

Screen Quality

FHD
FHD
-

Peak Brightness

420 nits
420 nits
-

Phone Variants

4GB 64GB, 6GB 128GB
4GB 64GB, 6GB 128GB, 4GB 128GB
3GB 32GB, 2GB 32GB

Expandable Storage

Yes
Yes
Yes

RAM Type

LPDDR4X
LPDDR4X
LPDDR3

Storage Type

UFS 2.1
UFS 2.1
eMMC 5.1

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

Operating System

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

GPU

Mali-G72 MP3
Mali-G72 MP3
Adreno 506

Chipset

Samsung Exynos 9 Octa 9611
Samsung Exynos 9 Octa 9611
Qualcomm Snapdragon 632

CPU

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)
Octa core (1.8 GHz, Quad core, Kryo 250 + 1.8 GHz, Quad core, Kryo 250)

Custom User Interface

Samsung One UI
Samsung One UI
MIUI

Clock Speed

2.3 GHz
2.3 GHz
1.8 GHz

Architecture

64 bit
64 bit
64 bit

Process Technology

10 nm
10 nm
14 nm

Battery Capacity

6000 mAh
6000 mAh
4000 mAh

Battery Removable

No
No
No

Battery Type

Li-ion
Li-ion
Li-Polymer

Charger Type

Fast, 15W
Fast, 15W
-

USB Type-C

Yes
Yes
No

Fast Charging

Yes
Yes
-

Announced On

18-Mar-20
5-Sep-19
5-Mar-19

Market Status

Available
Out of Stock
Available

Brand

Samsung
Samsung
Xiaomi

Model Number

SM-M215FZKDINS
SM-M307FZWDINS
M1810F6LI

Price Status

Confirmed
Confirmed
Confirmed

Price

Rs. 13,499
Rs. 15,900
Rs. 8,800

GPS

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

Audio Features

Dolby Atmos
Dolby Atmos
Active noise cancellation with dedicated mic

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

Bluetooth Type

v5.0
v5.0
v4.2

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) / 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) / 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), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 1900(band 2) / 1700(band 4) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / ...

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 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), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 1900(band 2) / 1700(band 4) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / ...

FM Radio

-
Yes
Yes

Front Video Recording

1920x1080 @ 30 fps
1920x1080 @ 30 fps
1920x1080 @ 30 fps

Front Camera Features

HDR
HDR
HDR

Front Camera Setup

Single, 20MP
Single, 16MP
Single, 8MP

Front Camera 1 Resolution

20 MP
16 MP
8 MP

Front Camera 1 Type

f/2.2 Primary Camera
f/2.0 Primary Camera
f/2.0 Primary Camera

Front Camera 1 Lens

26 mm focal length
-
1.12 micrometre pixel size

Front Sensor

CMOS
-
-

Front Aperture

f/2.2
f/2.0
f/2.0

Front Flash

No
No
Yes, Screen flash

Weight

188 grams
188 grams
180 grams

Colors

Midnight Blue, Raven Black
Opal Black, Sapphire Blue, Pearl White
Comet Blue, Lunar Red, Eclipse Black

Build

Back: Plastic
Back: Plastic
Back: Plastic

Dimensions

159 x 75.1 x 8.9 mm
159 x 75.1 x 8.9 mm
158.7 x 75.5 x 8.4 mm

SAR Value

Head: 0.468 W/kg
Head: 0.486 W/kg
Head: 1.031 W/kg, Body: 0.573 W/kg

OIS

No
No
-

Rear Flash

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

Rear Video Recording

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

Rear Camera Features

4 x Digital Zoom, Auto Flash, Face detection, Touch to focus
4 x 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
Triple, 48MP + 8MP + 5MP
Dual, 12MP + 2MP

Rear Camera 1 Resolution

48 MP
48 MP
12 MP

Rear Camera 1 Type

f/2.0 (upto 4x Digital Zoom) Primary Camera
f/2.0 (upto 4x Digital Zoom), Wide Angle (80 degree field-of-view) Primary Camera
f/2.2 Primary Camera

Rear Camera 1 Lens

26 mm focal length, 2" sensor size, 0.8 micrometre pixel size
2" sensor size, 0.8 micrometre pixel size
2.9" sensor size, 1.25 micrometre pixel size

Rear Camera 2 Resolution

8 MP
8 MP
2 MP

Rear Camera 2 Type

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

Rear Camera 2 Lens

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

Rear Camera 3 Resolution

5 MP
5 MP
-

Rear Camera 3 Type

f/2.2, Depth Camera
f/2.2, Depth Camera
-

Rear Sensor

CMOS image sensor
ISOCELL Plus
-

Rear Aperture

f/2.0
f/2.0
f/2.2

Fingerprint Scanner

Yes
Yes
Yes

Fingerprint Scanner Position

Rear
Rear
Rear

Face Unlock

Yes
Yes
Yes

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