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Samsung Galaxy A21S vs Samsung Galaxy S8 vs Xiaomi Redmi Note 6 Pro

Key Feature Comparison

6.5

Samsung Galaxy A21s

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7

Samsung Galaxy S8

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6.9

Redmi Note 6 Pro

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At a Glance

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

Samsung Exynos 8 Octa 850, Mali-G52 MP1

Octa core (2.3 GHz, Quad core, M2 Mongoose + 1.7 GHz, Quad core, Cortex A53)

Samsung Exynos 9 Octa 8895, Mali-G71 MP20

Octa core (1.8 GHz, Quad core, Kryo 260 + 1.6 GHz, Quad core, Kryo 260)

Qualcomm Snapdragon 636, Adreno 509

5000 mAh

Li-ion, Fast, 15W

3000 mAh

Li-ion, Fast

4000 mAh

Li-Polymer, Quick, v3.0

16.51 cm (6.5 inch)

270 ppi

14.73 cm (5.8 inch)

568 ppi, 2K

15.90 cm (6.3 inch)

403 ppi, FHD

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

1920x1080 @ 30 fps

Single, 12MP

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

Dual, 12MP + 5MP

1920x1080 @ 30 fps

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM, Dual VoLTE

Detailed Specs

Screen Size

16.51 cm (6.5 inch)
14.73 cm (5.8 inch)
15.90 cm (6.3 inch)

Screen Type

TFT
Super AMOLED
IPS LCD

Screen Resolution

720 x 1600 pixels
1440 x 2960 pixels
1080 x 2280 pixels

Pixel Density

270 ppi
568 ppi
403 ppi

Aspect Ratio

20:09
18.5:9
-

Screen to Body Ratio

82.75%
84.57%
80.68%

Screen Design

Punch hole
Bezel-less
Regular notch

Screen Protection

-
Gorilla Glass 5
Gorilla Glass 3

Screen Quality

-
2K
FHD

Phone Variants

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

Expandable Storage

Yes
Yes
Yes

RAM Type

LPDDR4X
LPDDR4
LPDDR4X

Storage Type

eMMC 5.1
-
eMMC 5.1

Expandable Storage Capacity

Yes, 512 GB
Yes, 256 GB
Yes, 256 GB

OTG Support

Yes
Yes
Yes

Sensors

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

Operating System

Android v10 (Q)
Android v7.0 (Nougat)
Android v8.1 (Oreo)

GPU

Mali-G52 MP1
Mali-G71 MP20
Adreno 509

Chipset

Samsung Exynos 8 Octa 850
Samsung Exynos 9 Octa 8895
Qualcomm Snapdragon 636

CPU

Octa core (2 GHz, Quad core, Cortex A55 + 2 GHz, Quad core, Cortex A55)
Octa core (2.3 GHz, Quad core, M2 Mongoose + 1.7 GHz, Quad core, Cortex A53)
Octa core (1.8 GHz, Quad core, Kryo 260 + 1.6 GHz, Quad core, Kryo 260)

Custom User Interface

Samsung One UI
-
MIUI

Clock Speed

2 GHz
2.3 GHz
1.8 GHz

Architecture

64 bit
64 bit
64 bit

Process Technology

8 nm
-
14 nm

Battery Capacity

5000 mAh
3000 mAh
4000 mAh

Battery Removable

No
No
No

Battery Type

Li-ion
Li-ion
Li-Polymer

Charger Type

Fast, 15W
Fast
Quick, v3.0

USB Type-C

Yes
Yes
No

Fast Charging

Yes
Yes
Yes

Wireless Charging

-
Yes
-

Announced On

15-May-20
5-Mar-17
5-Sep-18

Market Status

Available
Available
Available

Brand

Samsung
Samsung
Xiaomi

Model Number

SM-A217FZB1INS/SM-A217FZBGINS/SM-A217FZB5INS
SM-G950FZKDINS
M1806E7TI

Price Status

Confirmed
Confirmed
Confirmed

Price

Rs. 13,999
Rs. 29,208
Rs. 10,999

GPS

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

NFC

No
Yes
-

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 (Hybrid)
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/n 5GHz, MIMO
Yes, Wi-Fi 802.11, a/b/g/n

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, Dual VoLTE

eSIM

No
No
No

Wi-Fi Features

Wi-Fi Direct, Mobile Hotspot
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) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800...
4G Bands: TD-LTE 2300(band 40), 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 17) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 /...
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...

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) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800...
4G Bands: TD-LTE 2300(band 40), 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 17) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 /...
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...

Audio Features

-
32-bit/384kHz audioActive noise cancellation with dedicated mic
Active noise cancellation with dedicated mic

FM Radio

-
No
-

Front Video Recording

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

Front Camera Setup

Single, 13MP
Single, 8MP
Dual, 20MP + 2MP

Front Camera 1 Resolution

13 MP
8 MP
20 MP

Front Camera 1 Type

f/2.2 Primary Camera
f/1.7, Wide Angle Primary Camera
f/2.0 Primary Camera

Front Camera 1 Lens

3.1" sensor size, 1.12 micrometre pixel size
25 mm focal length, 3.6" sensor size, 1.22 micrometre pixel size
0.9 micrometre pixel size

Front Aperture

f/2.2
f/1.7
f/2.0

Front Flash

No
Yes, Screen flash
-

Front Camera Features

-
Wide Angle Selfie
HDR

Weight

192 grams
155 grams
182 grams

Colors

Black, Blue, White
Midnight Black, Orchid Gray, Coral Blue, Arctic Silver, Maple Gold, Burgundy Red
Black, Blue, Red, Rose Gold

Build

Back: Plastic
Case: Metal, Back: Metal
Back: Aluminium

Dimensions

163.7 x 75.3 x 8.9 mm
148.9 x 68.1 x 8.0 mm
157.9 x 76.4 x 8.2 mm

SAR Value

Head: 0.831 W/kg
-
-

OIS

No
Yes
-

Rear Flash

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

Rear Video Recording

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

Rear Camera Features

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

Rear Camera Setup

Quad, 48MP + 8MP + 2MP + 2MP
Single, 12MP
Dual, 12MP + 5MP

Rear Camera 1 Resolution

48 MP
12 MP
12 MP

Rear Camera 1 Type

f/2.0 (upto 8x Digital Zoom), Wide Angle Primary Camera
f/1.7 (upto 8x Digital Zoom), Wide Angle Primary Camera
f/1.9 Primary Camera

Rear Camera 1 Lens

26 mm focal length, 2" sensor size, 0.8 micrometre pixel size
26 mm focal length, 2.55" sensor size, 1.4 micrometre pixel size
2.55" sensor size, 1.4 micrometre pixel size

Rear Camera 2 Resolution

8 MP
-
5 MP

Rear Camera 2 Type

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

Rear Camera 2 Lens

4.0" sensor size, 1.12 micrometre pixel size
-
1.12 micrometre pixel size

Rear Camera 3 Resolution

2 MP
-
-

Rear Camera 3 Type

f/2.4, Macro Camera
-
-

Rear Camera 4 Resolution

2 MP
-
-

Rear Camera 4 Type

f/2.4, Depth Camera
-
-

Rear Aperture

f/2.0
f/1.7
f/1.9

Rear Sensor

-
Exmor-RS CMOS Sensor
ISO-CELL

Fingerprint Scanner

Yes
Yes
Yes

Fingerprint Scanner Position

Rear
Rear
Rear

Face Unlock

Yes
Yes
Yes
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