J Star Rocker vs Karbonn A9

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Comparing the J Star Rocker vs Karbonn A9 across display, camera and battery to help determine the better smartphone.

Here is the summary of the results:

Display: Karbonn A9 offers a screen size of 3.8 inches, while J Star Rocker offers 2.6 inches, making Karbonn A9 the larger display of the two. Both J Star Rocker and Karbonn A9 feature the same LCD display.


Rear Camera: Karbonn A9 offers a higher rear camera resolution with 5 MP, while J Star Rocker offers 0.3 MP, making Karbonn A9 better for rear camera photography.


Battery: J Star Rocker offers a higher battery capacity with 2000 mAh, while Karbonn A9 offers 1600 mAh, making J Star Rocker better for longer battery life.

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J Star Rocker
(Discontinued)
Karbonn A9
₹6,656
(Discontinued)
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Summary

Release Date

N/A
14 May, 2012

Performance

N/A
(upto 1 GHz)
N/A
512 MB RAM

Display

2.6 inches (6.6 cm)
3.8 inches (9.65 cm)
LCD
LCD
N/A
480x800 px

Rear Camera

0.3 MP
Primary Camera
5 MP
Primary Camera

Front Camera

N/A
0.3 MP

Battery

2000 mAh
1600 mAh

Storage

N/A
1 GB

User Ratings

N/A
4.1/5
(270 ratings)

User Feedback

General

Operating System

N/A
Android v2.3 (Gingerbread)

Performance

Processor

N/A
1 GHz

RAM

N/A
512 MB

Display

Display Type

LCD
LCD

Screen Size

2.6 inches  (6.6 cm)
3.8 inches  (9.65 cm)

Resolution

N/A
480x800 px

Pixel Density

N/A
246 ppi

Screen to Body Ratio (calculated)

N/A
56.56 %

Design

Height

N/A
120 mm

Width

N/A
60.5 mm

Thickness

N/A
11.30 mm

Weight

N/A
130 grams

Rear Camera

Resolution

0.3 MP
Primary Camera
5 MP
Primary Camera

Autofocus

N/A
Yes

Flash

Yes
Yes LED Flash

Image Resolution

N/A
2592 x 1944 Pixels

Shooting Modes

Continuous Shooting
N/A

Camera Features

Digital Zoom
Smile detection
Digital Zoom

Front Camera

Resolution

N/A
0.3 MP
Primary Camera

Camera Features

N/A
Fixed Focus

Battery

Capacity

2000 mAh
1600 mAh

Battery Type

Li-ion
Li-ion

TalkTime

Up to 3(2G)
Up to 4 Hours(2G)

Storage

Internal Storage

N/A
1 GB

Expandable Storage

Yes
Yes Up to 32 GB

Network & Connectivity

SIM Slot(s)

Single SIM
Dual SIM

SIM Type

N/A
SIM1: Mini

Network Support

5G Not Supported
5G Not Supported

Wi-Fi

No
Yes Wi-Fi 4 (802.11 b/g/n)

Bluetooth

Yes
Yes v2.1

GPS

N/A
Yes

Multimedia

Audio Jack

N/A
3.5 mm

Music

Yes Music Formats: Yes Real MP3 Player with Big Woofer Speaker
N/A

Sensors

Other Sensors

N/A
Light sensor Proximity sensor Accelerometer

Java

No
N/A

Browser

Yes
N/A

Phone Book

Yes
N/A

SMS

Yes
N/A