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Realme 7 vs Xiaomi Redmi Note 9 vs Samsung Galaxy A21S

Key Feature Comparison

7.2

Xiaomi Redmi Note 9

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6.5

Samsung Galaxy A21s

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At a Glance

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Octa core (2.05 GHz, Dual core, Cortex A76 + 2 GHz, Hexa Core, Cortex A55)

MediaTek Helio G95, Mali-G76 MC4

Octa core (2 GHz, Dual core, Cortex A75 + 2 GHz, Hexa Core, Cortex A55)

MediaTek Helio G85, Mali-G52

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

Samsung Exynos 8 Octa 850, Mali-G52 MP1

5000 mAh

Li-ion, Super Dart, 30W

5020 mAh

Li-ion, Fast, 22.5W

5000 mAh

Li-ion, Fast, 15W

6.5 inches

405 ppi, FHD

6.53 inches

395 ppi, FHD

6.5 inches

270 ppi

Quad, 64MP + 8MP + 2MP + 2MP

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

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

3840x2160 @ 30 fps

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

1920x1080 @ 30 fps

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

Detailed Specs

Screen Size

6.5 inches
6.53 inches
6.5 inches

Screen Type

IPS LCD
IPS LCD
TFT

Screen Resolution

1080 x 2400 pixels
1080 x 2340 pixels
720 x 1600 pixels

Pixel Density

405 ppi
395 ppi
270 ppi

Aspect Ratio

20:09
19.5:9
20:09

Screen Protection

Corning Gorilla Glass
Gorilla Glass 5
-

Screen to Body Ratio

90.50%
84.37%
82.75%

Screen Design

Punch hole
Punch hole
Punch hole

Screen Refresh Rate

90 Hz
60 Hz
-

Screen Quality

FHD
FHD
-

Peak Brightness

480 nits
450 nits
-

Phone Variants

6GB 64GB, 8GB 128GB
4GB 64GB, 6GB 128GB, 4GB 128GB
6GB 64GB, 4GB 64GB, 6GB 128GB

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, 256 GB
Yes, 512 GB
Yes, 512 GB

OTG Support

Yes
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 v10 (Q)
Android v10 (Q)
Android v10 (Q)

GPU

Mali-G76 MC4
Mali-G52
Mali-G52 MP1

Chipset

MediaTek Helio G95
MediaTek Helio G85
Samsung Exynos 8 Octa 850

CPU

Octa core (2.05 GHz, Dual core, Cortex A76 + 2 GHz, Hexa Core, Cortex A55)
Octa core (2 GHz, Dual core, Cortex A75 + 2 GHz, Hexa Core, Cortex A55)
Octa core (2 GHz, Quad core, Cortex A55 + 2 GHz, Quad core, Cortex A55)

Custom User Interface

Realme UI
MIUI
Samsung One UI

Clock Speed

2.05 GHz
2 GHz
2 GHz

Architecture

64 bit
64 bit
64 bit

Process Technology

12 nm
12 nm
8 nm

Battery Capacity

5000 mAh
5020 mAh
5000 mAh

Battery Removable

No
No
No

Battery Type

Li-ion
Li-ion
Li-ion

Charger Type

Super Dart, 30W
Fast, 22.5W
Fast, 15W

USB Type-C

Yes
Yes
Yes

Fast Charging

Yes
Yes
Yes

Charging Time

50 % in 26 minutes
-
-

Announced On

3-Sep-20
30-Apr-20
15-May-20

Market Status

Available
Available
Available

Brand

Realme
Xiaomi
Samsung

Model Number

RMX2151
M2003J15SI/MZB082EIN
SM-A217FZB1INS/SM-A217FZBGINS/SM-A217FZB5INS

Price Status

Confirmed
Confirmed
Confirmed

Price

Rs. 12,999
Rs. 10,999
Rs. 13,999

GPS

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

Audio Features

Dirac Sound Effect, MT6359 Audio Decoding Chip
-
-

NFC

No
Yes
No

Network Support

4G
4G
4G

Bluetooth

Yes
Yes
Yes

FM Radio

No
-
-

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
Yes, Wi-Fi 802.11, a/b/g/n
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

eSIM

No
No
No

Wi-Fi Features

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) / 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...
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...
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...

SIM 2 Bands

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

Front Video Recording

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

Front Camera Features

Fixed Focus
HDR, panorama
-

Front Camera Setup

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

Front Camera 1 Resolution

16 MP
13 MP
13 MP

Front Camera 1 Type

f/2.1, Wide Angle Primary Camera
f/2.25 Primary Camera
f/2.2 Primary Camera

Front Camera 1 Lens

26 mm focal length, 3" sensor size, 1 micrometre pixel size
3" sensor size, 1.12 micrometre pixel size
3.1" sensor size, 1.12 micrometre pixel size

Front Sensor

Exmor RS
-
-

Front Aperture

f/2.1
f/2.25
f/2.2

Weight

196.5 grams
200 grams
192 grams

Colors

Mist Blue, Mist White
Pebble Grey, Arctic White, Aqua Green
Black, Blue, White

Build

Plastic, Splash resistant design
Glass front (Gorilla Glass 5), plastic frame
Back: Plastic

Dimensions

162.3 x 75.4 x 9.4 mm
161.4 x 76.7 x 8.7 mm
163.7 x 75.3 x 8.9 mm

SAR Value

Head: 0.990 W/kg, Body: 0.934 W/kg
Head: 0.853 W/kg, Body: 0.433 W/kg
Head: 0.831 W/kg

Rear Flash

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

Rear Video Recording

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

Rear Camera Features

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

Rear Camera 1 Resolution

64 MP
48 MP
48 MP

Rear Camera 1 Type

f/1.8, Wide Angle Primary Camera
f/1.79 Primary Camera
f/2.0 (upto 8x Digital Zoom), Wide Angle Primary Camera

Rear Camera 1 Lens

26 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size
2" sensor size, 0.8 micrometre pixel size
26 mm focal length, 2" sensor size, 0.8 micrometre pixel size

Rear Camera 2 Resolution

8 MP
8 MP
8 MP

Rear Camera 2 Type

f/2.3, 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

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

Rear Camera 3 Resolution

2 MP
2 MP
2 MP

Rear Camera 3 Type

f/2.4, Macro Camera
f/2.4, Macro Camera
f/2.4, Macro Camera

Rear Camera 3 Lens

22 mm focal length, 5.0" sensor size, 1.75 micrometre pixel size
1.75 micrometre pixel size
-

Rear Camera 4 Resolution

2 MP
2 MP
2 MP

Rear Camera 4 Type

f/2.4, Depth Camera
f/2.4, Depth Camera
f/2.4, Depth Camera

Rear Camera 4 Lens

22 mm focal length, 5.0" sensor size, 1.75 micrometre pixel size
5.0" sensor size
-

Rear Sensor

Exmor-RS CMOS Sensor
ISOCELL Plus
-

Rear Aperture

f/1.8
f/1.79
f/2.0

Fingerprint Scanner

Yes
Yes
Yes

Fingerprint Scanner Position

Side
Rear
Rear

Face Unlock

Yes
Yes
Yes

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