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Karbonn K3 Boom Max vs Xiaomi Redmi K20 Pro

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Summary
Display

2.4" (6.1 cm)

240x320 px

6.39" (16.23 cm)

1080x2340 px (FHD+)

6.5", 120Hz

1080x2400 px (FHD+)

Rear Camera

0.3 MP

Single Camera

48 MP + 13 MP + 8 MP

Triple Camera

50 MP OIS + 8 MP

Dual Camera

Battery

1800 mAh

4000 mAh

6000 mAh

Performance

N/A

Snapdragon 855

6 GB RAM

MediaTek Dimensity 7025

8GB + 8GB Virtual RAM or Also available in 12GB + 12GB Virtual RAM

Front Camera

N/A

20 MP

Single Camera

16 MP

Single Camera

Storage

N/A

128 GB

Non Expandable

128 GB or 256 GB

1 TB (Expandable)

Expert Rating

4.0/5

Read Expert Review

User Rating

★★★★★
★★★★★

3.6/5 based on 122 ratings

★★★★★
★★★★★

4.5/5 based on 90,246 ratings

Read All User Reviews

Benchmarks

N/A

Compare Prices
Rs. 2,000 @Amazon Buy
Not available in any other store
Not Available in any store
Notify me when it's available
Rs. 14,999 @Flipkart Buy
Not available in any other store
General
Launch Date

August 24, 2017 (Official)

July 22, 2019 (Official)

April 16, 2024 (Official)

Operating System

Android v9.0 (Pie)

Android v14

Custom UI

MIUI

Performance
Very Good
Chipset

Qualcomm Snapdragon 855

MediaTek Dimensity 7025
Antutu Score: Close to 500k

CPU

Octa core (2.84 GHz, Single core, Kryo 485 + 2.42 GHz, Tri core, Kryo 485 + 1.8 GHz, Quad core, Kryo 485)

Octa core (2.5 GHz, Dual core, Cortex A78 + 2 GHz, Hexa Core, Cortex A55)

Architecture

64 bit

64 bit

Graphics

Adreno 640

IMG BXM-8-256

RAM

6 GB

8GB + 8GB Virtual RAM or Also available in 12GB + 12GB Virtual RAM

RAM Type

LPDDR4X

LPDDR4X

Display
Very Good
Display Type

TFT

AMOLED

IPS LCD

Screen Size

2.4 " (6.1 cm)

6.39 " (16.23 cm)

6.5 ", 120Hz

Resolution

240x320 px

1080x2340 px (FHD+)

1080x2400 px (FHD+)

Aspect Ratio

19.5:9

20:9

Pixel Density

167 ppi

403 ppi

405 ppi

Screen to Body Ratio (calculated)

85.9 %

85.53 %

Screen Protection

Corning Gorilla Glass v5

Gorilla Glass 3

Bezel-less display

with punch-hole display

Touch Screen

, Capacitive Touchscreen, Multi-touch

, Capacitive Touchscreen, Multi-touch

HDR 10 / HDR+ support

Refresh Rate

120 Hz

Screen to Body Ratio (claimed by the brand)

91.9 %

Design
Size Compare
Size Compare
Weight

191 grams

192 grams

Build Material

Back: Gorilla Glass

Back: Plastic

Colours

Black

Flame Red, Glacier Blue, Carbon Fiber Black, Pearl White

Mint Green, Pearl Blue, Ice Lilac

Waterproof

, Splash proof, IP52

Ruggedness

Dust proof

Camera
Main Camera
Camera Setup

Single

Triple

Dual

Resolution

0.3 MP Primary Camera

48 MP f/1.75, Wide Angle, Primary Camera(2" sensor size, 0.8µm pixel size)13 MP f/2.4, Ultra-Wide Angle Camera(3" sensor size, 1.12µm pixel size)8 MP f/2.4, Telephoto Camera(4.0" sensor size, 1.12µm pixel size)

50 MP f/1.8, Wide Angle, Primary Camera(1.22µm pixel size)8 MP f/2.2, Ultra-Wide Angle Camera(1.12µm pixel size)

Sensor

IMX586, Exmor-RS CMOS Sensor

Autofocus

, Phase Detection autofocus, Laser autofocus

, Phase Detection autofocus

OIS

No

Flash

, Dual LED Flash

, LED Flash

Image Resolution

640 x 480 Pixels

8000 x 6000 Pixels

8150 x 6150 Pixels

Settings

Exposure compensation, ISO control

Exposure compensation, ISO control

Shooting Modes

Continuous Shooting
High Dynamic Range mode (HDR)

Continuous Shooting
High Dynamic Range mode (HDR)
Burst mode
Macro Mode

Camera Features

Digital Zoom

Auto Flash
Face detection
Touch to focus

Digital Zoom
Auto Flash
Custom Watermark
Face detection
Filters
Touch to focus

Video Recording

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

1920x1080 @ 30 fps

Video Recording Features

Dual Video Recording

Front Camera
Very Good
Camera Setup

Single

Single

Resolution

20 MP f/2.2, Primary Camera(0.8µm pixel size)

16 MP f/2.4, Wide Angle, Primary Camera(1µm pixel size)

Camera Type

Pop-Up

Video Recording

1920x1080 @ 30 fps
1280x720 @ 30 fps

1920x1080 @ 30 fps

Battery
Good
Capacity

1800 mAh

4000 mAh

6000 mAh

Type

Li-ion

Li-Polymer

Removable

No

No

Quick Charging

, Quick, v4.0: 58 % in 30 minutes

, Turbo, 33W: 50 % in 33 minutes

USB Type-C

Storage
Best in Class
Internal Memory

128 GB

128 GB or 256 GB
UFS 2.2

Expandable Memory

, Up to 16 GB

No

, Up to 1 TB

USB OTG

Network & Connectivity
SIM Slot(s)

Dual SIM, GSM+GSM

Dual SIM, GSM+GSM, Dual VoLTE

Dual SIM, GSM+GSM

SIM Size

SIM1: Nano
SIM2: Nano

SIM1: Nano
SIM2: Nano (Hybrid)

Network Support

5G Not Supported in India, 2G

5G Not Supported in India, 4G Supported in India, 3G, 2G

5G Supported in India, 4G Supported in India, 3G, 2G

VoLTE

SIM 1

2G Bands:
GSM 1800 / 900 MHz

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
EDGE:
Available
Read More..

14 5G Bands:
FDD N1 / N2 / N3 / N5 / N7 / N8 / N20 / N28
TDD N38 / N40 / N41 / N66 / N77 / N78
4G Bands:
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 3500(band 42)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 1900(band 2) / 850(band 5) / 850(band 18) / 850(band 19) / 800(band 20) / 850(band 26)
3G Bands:
UMTS 1900 / 2100 / 850 / 900 MHz
2G Bands:
GSM 1800 / 1900 / 850 / 900 MHz
GPRS:
Available
EDGE:
Available
Read More..

SIM 2

2G Bands:
GSM 1800 / 900 MHz

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
EDGE:
Available
Read More..

14 5G Bands:
FDD N1 / N2 / N3 / N5 / N7 / N8 / N20 / N28
TDD N38 / N40 / N41 / N66 / N77 / N78
4G Bands:
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 3500(band 42)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 850(band 5) / 850(band 18) / 850(band 19) / 800(band 20) / 850(band 26)
3G Bands:
UMTS 1900 / 2100 / 850 / 900 MHz
2G Bands:
GSM 1800 / 1900 / 850 / 900 MHz
GPRS:
Available
EDGE:
Available
Read More..

SAR Value

Head: 1.03 W/kg, Body: 0.72 W/kg

Wi-Fi

, Wi-Fi 5 (802.11 a/b/g/n/ac)

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

Wi-Fi Features

Wi-Fi Direct, Mobile Hotspot

Mobile Hotspot

Wi-Fi Calling

Bluetooth

, v5.0

, v5.3

GPS

with A-GPS, Glonass

with A-GPS, Glonass

NFC

No

USB Connectivity

Mass storage device, USB charging

Mass storage device, USB charging

Multimedia
FM Radio

, Recording option

Stereo Speakers

Loudspeaker

Audio Jack

3.5 mm

3.5 mm

Audio Features

Dolby Atmos Stereo Speakers

Video Player

, Video Formats: 3GP, MP4

Ring Tone

Music ringtones, Polyphonic ringtones, Vibration

Music

, Music Formats: MP3

Special Features

Torch Light

Sensors
Fingerprint Sensor

Fingerprint Sensor Position

On-screen

Side

Fingerprint Sensor Type

Optical

Other Sensors

Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Games

Phone Book

, Limited

Other Facilities

Calculator, Stopwatch, Calendar, Alarm

Price list

Rs. 2,000
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Rs. 14,999
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