Select City
Get your best price for your old phone

OPPO F25 Pro 5G vs Karbonn X21

Key Feature Comparison

8.1

OPPO F25 Pro 5G

Check Price
close
4.1

Karbonn X21

Check Price
close
Add more phone to compare

At a Glance

Show differences only

Octa core (2.6 GHz, Dual core, Cortex A78 + 2 GHz, Hexa Core, Cortex A55)

MediaTek Dimensity 7050, Mali-G68 MC4

Octa core, 1.6 GHz, Cortex A55

Unisoc SC9863, PowerVR GE8322

5000 mAh

Li-ion, Super VOOC, 67W

3000 mAh

Li-ion

6.7 inches

394 ppi, FHD

5.45 inches

295 ppi, HD

Triple, 64MP + 8MP + 2MP

3840x2160 @ 30 fps, 1920x1080 @ 60 fps

Single, 8MP

5G

Dual SIM, GSM+GSM

4G

Dual SIM, GSM+GSM

Detailed Specs

Screen Size

6.7 inches
5.45 inches

Screen Type

AMOLED
IPS LCD

Screen Resolution

1080 x 2412 pixels
720 x 1440 pixels

Pixel Density

394 ppi
295 ppi

Screen Protection

Yes
-

Screen to Body Ratio

93.40%
72.38%

Screen Design

Punch hole
Bezel-less

Screen Refresh Rate

120 Hz
-

Screen Quality

FHD
HD

Peak Brightness

500 nits
-

Aspect Ratio

-
18:09

Phone Variants

8GB 128GB, 8GB 256GB
2GB 32GB

Expandable Storage

Yes
Yes

RAM Type

LPDDR4X
-

Storage Type

UFS 3.1
-

Expandable Storage Capacity

Yes, 2 TB
Yes, 256 GB

OTG Support

Yes
-

Sensors

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

Operating System

Android v14
Android v10

GPU

Mali-G68 MC4
PowerVR GE8322

Chipset

MediaTek Dimensity 7050
Unisoc SC9863

CPU

Octa core (2.6 GHz, Dual core, Cortex A78 + 2 GHz, Hexa Core, Cortex A55)
Octa core, 1.6 GHz, Cortex A55

Custom User Interface

ColorOS
Android Go

Clock Speed

2.6 GHz
1.6 GHz

Architecture

64 bit
64 bit

Process Technology

6 nm
-

Battery Capacity

5000 mAh
3000 mAh

Battery Removable

No
Yes

Battery Type

Li-ion
Li-ion

Charger Type

Super VOOC, 67W
-

USB Type-C

Yes
No

Fast Charging

Yes
-

Charging Time

100 % in 48 minutes
-

Announced On

29-Feb-24
15-Jun-21

Market Status

Available
Available

Brand

OPPO
Karbonn

Model Number

CPH2603
X21

Price Status

Confirmed
Confirmed

Price

Rs. 23,999
Rs. 5,999

GPS

Yes A-GPS, Glonass
Yes A-GPS

NFC

No
No

Network Support

5G
4G

Bluetooth

Yes
Yes

FM Radio

No
-

3.5mm Audio Jack

No
Yes

SIM Size

SIM1: Nano, SIM2: Nano (Hybrid)
SIM1: Nano, SIM2: Nano

Wi-Fi

Yes, Wi-Fi 6E (802.11 a/b/g/n/ac/ax) 5GHz 6GHz, MIMO
Yes, Wi-Fi 802.11, a/b/g/n

Bluetooth Type

v5.2
v4.2

Audio Jack

USB Type-C
3.5 mm

SIM Slot(s)

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

eSIM

No
No

Wi-Fi Features

Mobile Hotspot
Mobile Hotspot

VoLTE

Yes
Yes

SIM 1 Bands

5G Bands: FDD N1 / N3 / N5 / N8 / N28, TDD N40 / N41 / N77 / N78, 4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM...
4G Bands: TD-LTE 2300(band 40), FD-LTE 1800(band 3), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...

SIM 2 Bands

5G Bands: FDD N1 / N3 / N5 / N8 / N28, TDD N40 / N41 / N77 / N78, 4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM...
4G Bands: TD-LTE 2300(band 40), FD-LTE 1800(band 3), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...

Front Video Recording

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

Front Camera Features

Fixed Focus
-

Front Camera Setup

Single, 32MP
Single, 5MP

Front Camera 1 Resolution

32 MP
5 MP

Front Camera 1 Type

f/2.4, Wide Angle, Primary Camera
Primary Camera

Front Camera 1 Lens

21.3 mm focal length, 2.74" sensor size, 0.8 micrometre pixel size
-

Front Sensor

Exmor RS
-

Front Aperture

f/2.4
-

Front Flash

-
Yes, LED Flash

Weight

177 grams
160 grams

Colors

Lava Red, Ocean Blue
Midnight Blue, Aqua Green

Dimensions

161.6 x 74.7 x 7.5 mm
147.5 x 71.8 x 9.3 mm

SAR Value

Head: 0.98 W/kg, Body: 0.99 W/kg
Head: 0.807 W/kg, Body: 1.152 W/kg

OIS

No
No

Rear Flash

Yes, LED Flash
Yes, LED Flash

Rear Video Recording

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

Rear Camera Features

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

Rear Camera Setup

Triple, 64MP + 8MP + 2MP
Single, 8MP

Rear Camera 1 Resolution

64 MP
8 MP

Rear Camera 1 Type

f/1.7, Wide Angle (81 degree field-of-view), Primary Camera
Primary Camera

Rear Camera 1 Lens

25 mm focal length, 2" sensor size, 0.7 micrometre pixel size
-

Rear Camera 2 Resolution

8 MP
-

Rear Camera 2 Type

f/2.2, Ultra-Wide Angle Camera
-

Rear Camera 2 Lens

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

Rear Camera 3 Resolution

2 MP
-

Rear Camera 3 Type

f/2.4, Macro Camera
-

Rear Camera 3 Lens

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

Rear Sensor

OVB64B
-

Rear Aperture

f/1.7
-

Fingerprint Scanner

Yes
No

Fingerprint Scanner Position

On-Screen
-

Fingerprint Scanner Type

Optical
-

Face Unlock

-
Yes
Turn your old phone into cash

You May Also Read

Vivo Mobile Price List
Xiaomi Mobile Price List
New Upcoming Mobile Phones June 2023
Best Mobile Phones Under 50000
Best Mobile Phones Under 45000

Recent News

Siri Finally Gets Smart: The GPT-5 Upgrade With iOS 26 Is Confirmed
11th Aug 2025
Pixel 10 Latest Leak: Phones Will Not Have A SIM Slot
11th Aug 2025
Realme GT 8 Pro Series Launch Imminent: Details Inside
10th Aug 2025
Realme 15 Pro GoT Limited Edition May Launch Soon
10th Aug 2025
Apple iPhone 17, Pro And Pro Max Price Leak: Details Inside
10th Aug 2025

Tips & Tricks

How To Enable Gaming Mode In iPhone? Easiest Guide!
8th Aug 2025
How To Port From BSNL To JIO: Full Guide
7th Aug 2025
How To Enable Developer Mode In iPhone: Step-By-Step Guide [2025]
6th Aug 2025
How to Check RC Status Online in India: Step-by-Step Guide
5th Aug 2025
How To Recover Deleted Call History On iPhone: Step-By-Step Guide
4th Aug 2025

Popular Leaks

POCO F7 Specs Leak, Will Launch With 7000mAh Battery
12th Jan 2025
iQOO and POCO to Enter Offline Market in India; Here’s When
23rd Nov 2021
OPPO Reno 14 Pro Leaks: New Design, Camera Details And Launch Hints
10th Apr 2025
OnePlus Nord 5 And Nord CE 5 Launch Leaks: Launch Timeframe, Specs
8th Jun 2025
Here’s How You Can Claim OnePlus 3, 3T, 5, 5T, 6, 6T Free Battery Replacement Offer in India
27th Aug 2021