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Realme 7 vs Samsung Galaxy A21S vs Xiaomi Mi 9

Key Feature Comparison

6.5

Samsung Galaxy A21s

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6.8

Xiaomi Mi 9

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

Samsung Exynos 8 Octa 850, Mali-G52 MP1

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

5000 mAh

Li-ion, Super Dart, 30W

5000 mAh

Li-ion, Fast, 15W

3300 mAh

Li-ion, Quick, v4.0

6.5 inches

405 ppi, FHD

6.5 inches

270 ppi

6.39 inches

403 ppi, FHD

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

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

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

1920x1080 @ 30 fps

Triple, 48MP + 12MP + 16MP

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

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM, Dual VoLTE

Detailed Specs

Screen Size

6.5 inches
6.5 inches
6.39 inches

Screen Type

IPS LCD
TFT
AMOLED

Screen Resolution

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

Pixel Density

405 ppi
270 ppi
403 ppi

Aspect Ratio

20:09
20:09
19.5:9

Screen Protection

Corning Gorilla Glass
-
Gorilla Glass 6

Screen to Body Ratio

90.50%
82.75%
90.70%

Screen Design

Punch hole
Punch hole
Waterdrop notch

Screen Refresh Rate

90 Hz
-
-

Screen Quality

FHD
-
FHD

Peak Brightness

480 nits
-
-

Phone Variants

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

Expandable Storage

Yes
Yes
No

RAM Type

LPDDR4X
LPDDR4X
LPDDR4X

Storage Type

UFS 2.1
eMMC 5.1
-

Expandable Storage Capacity

Yes, 256 GB
Yes, 512 GB
-

OTG Support

Yes
Yes
-

Sensors

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

Operating System

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

GPU

Mali-G76 MC4
Mali-G52 MP1
Adreno 640

Chipset

MediaTek Helio G95
Samsung Exynos 8 Octa 850
Qualcomm Snapdragon 855

CPU

Octa core (2.05 GHz, Dual core, Cortex A76 + 2 GHz, Hexa Core, Cortex A55)
Octa core (2 GHz, Quad core, Cortex A55 + 2 GHz, Quad core, Cortex A55)
Octa core (2.84 GHz, Single core, Kryo 485 + 2.42 GHz, Tri core, Kryo 485 + 1.8 GHz, Quad core, Kryo 485)

Custom User Interface

Realme UI
Samsung One UI
MIUI

Clock Speed

2.05 GHz
2 GHz
2.84 GHz

Architecture

64 bit
64 bit
64 bit

Process Technology

12 nm
8 nm
-

Battery Capacity

5000 mAh
5000 mAh
3300 mAh

Battery Removable

No
No
No

Battery Type

Li-ion
Li-ion
Li-ion

Charger Type

Super Dart, 30W
Fast, 15W
Quick, v4.0

USB Type-C

Yes
Yes
Yes

Fast Charging

Yes
Yes
Yes

Charging Time

50 % in 26 minutes
-
-

Announced On

3-Sep-20
15-May-20
5-Feb-19

Market Status

Available
Available
Launched Globally

Brand

Realme
Samsung
Xiaomi

Model Number

RMX2151
SM-A217FZB1INS/SM-A217FZBGINS/SM-A217FZB5INS
-

Price Status

Confirmed
Confirmed
Expected

Price

Rs. 12,999
Rs. 13,999
Rs. 42,800

GPS

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

Audio Features

Dirac Sound Effect, MT6359 Audio Decoding Chip
-
Active noise cancellation with dedicated mic

NFC

No
No
Yes

Network Support

4G
4G
4G

Bluetooth

Yes
Yes
Yes

FM Radio

No
-
-

3.5mm Audio Jack

Yes
Yes
No

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

Bluetooth Type

v5.0
v5.0
v5.0

Audio Jack

3.5 mm
3.5 mm
USB Type-C

SIM Slot(s)

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

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 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...
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...

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 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...
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...

Front Video Recording

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

Front Camera Features

Fixed Focus
-
HDR

Front Camera Setup

Single, 16MP
Single, 13MP
Single, 20MP

Front Camera 1 Resolution

16 MP
13 MP
20 MP

Front Camera 1 Type

f/2.1, Wide Angle Primary Camera
f/2.2 Primary Camera
f/2.0 Primary Camera

Front Camera 1 Lens

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

Front Sensor

Exmor RS
-
-

Front Aperture

f/2.1
f/2.2
f/2.0

Front Flash

-
No
Yes, Screen flash

Weight

196.5 grams
192 grams
173 grams

Colors

Mist Blue, Mist White
Black, Blue, White
Deep Gray, Holographic Illusion Blue, Holographic Illusion

Build

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

Dimensions

162.3 x 75.4 x 9.4 mm
163.7 x 75.3 x 8.9 mm
157.5 x 74.6 x 7.6 mm

SAR Value

Head: 0.990 W/kg, Body: 0.934 W/kg
Head: 0.831 W/kg
-

Rear Flash

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

Rear Video Recording

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

Rear Camera Features

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

Rear Camera Setup

Quad, 64MP + 8MP + 2MP + 2MP
Quad, 48MP + 8MP + 2MP + 2MP
Triple, 48MP + 12MP + 16MP

Rear Camera 1 Resolution

64 MP
48 MP
48 MP

Rear Camera 1 Type

f/1.8, Wide Angle Primary Camera
f/2.0 (upto 8x Digital Zoom), Wide Angle Primary Camera
f/1.75 Primary Camera

Rear Camera 1 Lens

26 mm focal length, 1.7" 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
12 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 Telephoto (upto 2x Optical Zoom) Camera

Rear Camera 2 Lens

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

Rear Camera 3 Resolution

2 MP
2 MP
16 MP

Rear Camera 3 Type

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

Rear Camera 3 Lens

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

Rear Camera 4 Resolution

2 MP
2 MP
-

Rear Camera 4 Type

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
-
-

Rear Sensor

Exmor-RS CMOS Sensor
-
Exmor-RS CMOS Sensor

Rear Aperture

f/1.8
f/2.0
f/1.75

OIS

-
No
-

Fingerprint Scanner

Yes
Yes
Yes

Fingerprint Scanner Position

Side
Rear
On-Screen

Face Unlock

Yes
Yes
Yes

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