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Xiaomi Mi 11X vs Samsung Galaxy A21S vs Samsung Galaxy A51

Key Feature Comparison

7.9

Xiaomi Mi 11X

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6.5

Samsung Galaxy A21s

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6.9

Samsung Galaxy A51

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At a Glance

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Octa core (3.2 GHz, Single core, Kryo 585 + 2.42 GHz, Tri core, Kryo 585 + 1.8 GHz, Quad core, Kryo 585)

Qualcomm Snapdragon 870, Adreno 650

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

Samsung Exynos 9 Octa 9611, Mali-G72 MP3

4520 mAh

Li-Polymer, Fast, 33W

5000 mAh

Li-ion, Fast, 15W

4000 mAh

Li-ion, Fast, 15W

6.67 inches

395 ppi, FHD

6.5 inches

270 ppi

6.5 inches

405 ppi, FHD

Triple, 48MP + 8MP + 5MP

3840x2160 @ 30 fps, 1920x1080 @ 60 fps

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

1920x1080 @ 30 fps

Quad, 48MP + 12MP + 5MP + 5MP

3840x2160 @ 30 fps

5G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

Detailed Specs

Screen Size

6.67 inches
6.5 inches
6.5 inches

Screen Type

AMOLED
TFT
Super AMOLED

Screen Resolution

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

Pixel Density

395 ppi
270 ppi
405 ppi

Aspect Ratio

20:09
20:09
20:09

Screen Protection

Gorilla Glass 5
-
Gorilla Glass 3

Screen to Body Ratio

85.88%
82.75%
87.44%

Screen Design

Punch hole
Punch hole
Punch hole

Screen Refresh Rate

120 Hz
-
-

Screen Quality

FHD
-
FHD

Peak Brightness

1300 nits
-
-

Phone Variants

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

Expandable Storage

No
Yes
Yes

RAM Type

LPDDR5
LPDDR4X
LPDDR4X

Storage Type

UFS 3.1
eMMC 5.1
UFS 2.0

OTG Support

Yes
Yes
Yes

Expandable Storage Capacity

-
Yes, 512 GB
Yes, 512 GB

Sensors

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

Operating System

Android v11
Android v10 (Q)
Android v10 (Q)

GPU

Adreno 650
Mali-G52 MP1
Mali-G72 MP3

Chipset

Qualcomm Snapdragon 870
Samsung Exynos 8 Octa 850
Samsung Exynos 9 Octa 9611

CPU

Octa core (3.2 GHz, Single core, Kryo 585 + 2.42 GHz, Tri core, Kryo 585 + 1.8 GHz, Quad core, Kryo 585)
Octa core (2 GHz, Quad core, Cortex A55 + 2 GHz, Quad core, Cortex A55)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)

Custom User Interface

MIUI
Samsung One UI
Samsung One UI

Clock Speed

3.2 GHz
2 GHz
2.3 GHz

Architecture

64 bit
64 bit
64 bit

Process Technology

7 nm
8 nm
10 nm

Battery Capacity

4520 mAh
5000 mAh
4000 mAh

Battery Removable

No
No
No

Battery Type

Li-Polymer
Li-ion
Li-ion

Charger Type

Fast, 33W
Fast, 15W
Fast, 15W

USB Type-C

Yes
Yes
Yes

Fast Charging

Yes
Yes
Yes

Charging Time

100 % in 52 minutes
-
-

Announced On

27-Apr-21
15-May-20
5-Dec-19

Market Status

Available
Available
Available

Brand

Xiaomi
Samsung
Samsung

Model Number

M2012K11AI
SM-A217FZB1INS/SM-A217FZBGINS/SM-A217FZB5INS
SM-A515FZB1INS/SM-A515FZBWINS

Price Status

Confirmed
Confirmed
Confirmed

Price

Rs. 29,999
Rs. 13,999
Rs. 20,450

GPS

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

Audio Features

Dolby Atmos
-
Dolby Atmos

NFC

Yes
No
Yes

Network Support

5G
4G
4G

Bluetooth

Yes
Yes
Yes

FM Radio

No
-
-

3.5mm Audio Jack

No
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, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz

Bluetooth Type

v5.1
v5.0
v5.0

Audio Jack

USB Type-C
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) / 2600(band 7) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDG...
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), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G Bands: UMTS 1...

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), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDG...
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), 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 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...

Front Video Recording

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

Front Camera Setup

Single, 20MP
Single, 13MP
Single, 32MP

Front Camera 1 Resolution

20 MP
13 MP
32 MP

Front Camera 1 Type

f/2.45, Wide Angle Primary Camera
f/2.2 Primary Camera
f/2.2 Primary Camera

Front Camera 1 Lens

3.4" sensor size, 0.8 micrometre pixel size
3.1" sensor size, 1.12 micrometre pixel size
2.8" sensor size, 0.8 micrometre pixel size

Front Aperture

f/2.45
f/2.2
f/2.2

Front Flash

-
No
No

Weight

196 grams
192 grams
172 grams

Colors

Celestial Silver, Lunar White, Cosmic Black
Black, Blue, White
Prism Crush White, Prism Crush Black, Prism Crush Pink, Prism Crush Blue

Build

Back: Gorilla Glass
Back: Plastic
Back: Plastic

Dimensions

163.7 x 76.4 x 7.8 mm
163.7 x 75.3 x 8.9 mm
158.5 x 73.6 x 7.9 mm

SAR Value

-
Head: 0.831 W/kg
Head: 0.598 W/kg

Rear Flash

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

Rear Video Recording

3840x2160 @ 30 fps, 1920x1080 @ 60 fps
1920x1080 @ 30 fps
3840x2160 @ 30 fps

Rear Camera Features

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

Rear Camera Setup

Triple, 48MP + 8MP + 5MP
Quad, 48MP + 8MP + 2MP + 2MP
Quad, 48MP + 12MP + 5MP + 5MP

Rear Camera 1 Resolution

48 MP
48 MP
48 MP

Rear Camera 1 Type

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

Rear Camera 1 Lens

26 mm focal length, 2" sensor size, 0.8 micrometre pixel size
26 mm focal length, 2" sensor size, 0.8 micrometre pixel size
26 mm focal length, 2.25" sensor size, 0.8 micrometre pixel size

Rear Camera 2 Resolution

8 MP
8 MP
12 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
5 MP

Rear Camera 3 Type

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

Rear Camera 3 Lens

50 mm focal length, 5.0" sensor size, 1.12 micrometre pixel size
-
-

Rear Sensor

Exmor-RS CMOS Sensor
-
ISO-CELL

Rear Aperture

f/1.79
f/2.0
f/2.0

OIS

-
No
No

Rear Camera 2 Lens

-
4.0" sensor size, 1.12 micrometre pixel size
-

Rear Camera 4 Resolution

-
2 MP
5 MP

Rear Camera 4 Type

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

Fingerprint Scanner

Yes
Yes
Yes

Fingerprint Scanner Position

Side
Rear
On-Screen

Face Unlock

Yes
Yes
Yes

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