Zen Ultrafone 503 3G vs Karbonn A55

Comparing the Zen Ultrafone 503 3G vs Karbonn A55 across performance, display, camera, battery, storage and user rating to help determine the better smartphone.

Here is the summary of the results:

Performance: Both Zen Ultrafone 503 3G and Karbonn A55 run at the same processing speed of 1.2 GHz.

Display: Zen Ultrafone 503 3G offers a screen size of 4 inches, while Karbonn A55 offers 3.5 inches, making Zen Ultrafone 503 3G the larger display of the two. Karbonn A55 features a IPS LCD display compared to Zen Ultrafone 503 3G's TFT, making Karbonn A55 the better display of the two.

Rear Camera: Both Zen Ultrafone 503 3G and Karbonn A55 feature a 3.2 MP primary rear camera.

Front Camera: Zen Ultrafone 503 3G offers a higher front camera resolution with 1.3 MP, while Karbonn A55 offers 0.3 MP, making Zen Ultrafone 503 3G better for front camera photography.

Battery: Zen Ultrafone 503 3G offers a higher battery capacity with 1500 mAh, while Karbonn A55 offers 1100 mAh, making Zen Ultrafone 503 3G better for longer battery life.

Storage: Zen Ultrafone 503 3G offers higher internal storage with 512 GB, while Karbonn A55 offers 4 GB, making Zen Ultrafone 503 3G the better option for storage.

User Rating: Karbonn A55 receives a higher user rating of 3.5, while Zen Ultrafone 503 3G has a rating of 3.4.

Zen Ultrafone 503 3G

₹2,085

(Discontinued)

Karbonn A55

₹4,090

(Out of Stock)

Summary

Release Date

12 Mar, 2014

12 Apr, 2014

14 May, 2026

Performance

N/A	N/A
N/A	N/A	Snapdragon 8 Elite Gen 5
(upto 1.2 GHz)	(upto 1.2 GHz)	Octa Core (upto 4.61 GHz)
256 MB RAM	512 MB RAM	16 GB RAM

Display

N/A	N/A
4.0 inches (10.16 cm)	3.5 inches (8.89 cm)	6.82 inches (17.32 cm)
TFT	IPS LCD	AMOLED
480x800 px	320x480 px	1440x3168 px (QHD+)
N/A	N/A	144 Hz Refresh Rate

Rear Camera

N/A	N/A
3.2 MP Primary Camera	3 MP Primary Camera	200 MP Primary Camera (upto 3.7x Optical Zoom)
N/A	N/A	200 MP Telephoto Camera
N/A	N/A	50 MP Ultra-Wide Angle Camera

Front Camera

N/A	N/A
1.3 MP	0.3 MP	50 MP

Battery

N/A	N/A
1500 mAh	1100 mAh	6600 mAh
N/A	N/A	100W Flash Charging
N/A	N/A	Wireless Charging

Storage

512 MB	4 GB	512 GB
N/A	N/A	UFS 4.1

Expert Review

N/A

8.7/10

Read Expert Review

Pros

Device yet to be reviewed

Device yet to be reviewed

Stellar and versatile three-lens camera system
Excellent performance
Bright and crisp 2K AMOLED display

Cons

Device yet to be reviewed

Device yet to be reviewed

Battery life could have been better
Very expensive with camera kit
No shortcut key

User Ratings

3.4/5

(16 ratings)

3.5/5

(15 ratings)

4.6/5

(29 ratings)

Benchmarks (The higher, the better)

N/A	N/A	3,977,648 AnTuTu Score
N/A	N/A	15h 10m Battery Life (PC Mark)

Compare Prices

Not Available in any store

₹159,999

@ Amazon

Video

There are no videos available for the device.

1 Video

User Feedback

General

Launch Date

N/A

Apr 12, 2014

(Official)

May 06, 2026

(Official)

Operating System

Android v4.2.2 (Jelly Bean)

Android v4.2 (Jelly Bean)

Android v16

OS Updates

N/A

5 Year

Security Updates

N/A

7 Year

Custom UI

N/A

Origin OS

Performance

Performance Rating

N/A

Best In Class

Chipset

N/A

Qualcomm Snapdragon 8 Elite Gen 5 SM8850-AC

Processor

Dual core, 1.2 GHz

Octa core

4.61 GHz, Dual core, Oryon 3.62 GHz, Hexa Core, Oryon

Architecture (The higher, the better)

N/A

64 bit

Fabrication (The lower, the better)

N/A

3 nm

Graphics (GPU)

N/A

Adreno 840

RAM

256 MB

512 MB

16 GB

RAM Type

N/A

LPDDR5X Ultra

Performance Test Results

AnTuTu Score (The higher, the better) AnTuTu benchmark measures overall performance of a phone by stress-testing CPU, GPU, RAM, etc.

N/A

3,977,648

Bootup Time (The lower, the better)

N/A

14.0 s

Gaming Test Results

Wild Life Extreme (The higher, the better) Wild Life Extreme is a classic mobile benchmark; it renders in 4K to test the peak performance of a wide range of devices.

N/A

6,450

Battery Drain* (The lower, the better)

N/A

7.0 %

Heating* (The lower, the better)

N/A

21.7 %

* after 30 mins of gaming

Display

Display Rating

N/A

Best In Class

Display Type

TFT

IPS LCD

AMOLED

Screen Size

4.0 inches (10.16 cm)

3.5 inches (8.89 cm)

6.82 inches (17.32 cm)

Resolution

480x800 px

320x480 px

1440x3168 px (QHD+)

Peak Brightness

N/A

4500 nits

Refresh Rate

N/A

144 Hz

Aspect Ratio

N/A

19.8:9

Pixel Density

233 ppi

165 ppi

510 ppi

Screen to Body Ratio (calculated)

N/A

89.7 %

Screen Protection

N/A

Yes

Bezel-less Display

N/A

Yes with punch-hole display

HDR 10 / HDR+ Support

N/A

Yes

Screen to Body Ratio (claimed by the brand)

N/A

94.49 %

Design

Height

N/A

162.98 mm

Width

N/A

76.81 mm

Thickness

N/A

8.19 mm

Weight

100 grams

N/A

232 grams

Build Material

N/A

Back: Glass

Rear Camera

Rear Camera Rating

N/A

Best In Class

Resolution

3.2 MP
Primary Camera

3 MP
Primary Camera

200 MP
Primary Camera105x Digital Zoom 3.7x Optical Zoomf/1.8535 mm focal length LYT 901 0.7µm pixel size

N/A

200 MP
f/2.67 Telephoto Camera85 mm focal length 1/1.28" sensor size

N/A

50 MP
f/2.0 Ultra-Wide Angle Camera14 mm focal length

Autofocus

N/A

Yes

OIS

N/A

Yes

Flash

Yes

Yes LED Flash

Yes Dual LED Flash

Image Resolution

1280 x 1024 Pixels

2000 x 1500 Pixels

N/A

Camera Features

Digital Zoom

105 x Digital Zoom
3.7 x Optical Zoom

Video Recording

N/A

8k @30 fps
4k @30/60/120 fps
Full HD @30/60/120 fps

Front Camera

Front Camera Rating

N/A

Best In Class

Resolution

1.3 MP
Primary Camera

0.3 MP
Primary Camera

50 MP
f/2.45 Primary Camera

Flash

N/A

Yes Screen flash

Battery

Battery Rating

N/A

Excellent

Capacity

1500 mAh

1100 mAh

6600 mAh

Battery Type

Li-ion

TalkTime

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

N/A

Quick Charging

N/A

Yes 100W Flash Charging

Wireless Charging

N/A

Yes 40W Wireless Charging

Battery Test Results

Battery Life (PC Mark) (The higher, the better) PCMark Battery benchmark measures battery life of a phone with various activities such as web browsing, photo editing, writing, video editing, etc.

N/A

15h 10m

Charging Time (20% to 100%) (The lower, the better)

N/A

0h 36m 0s

Storage

Internal Storage

512 MB

4 GB

512 GB

Storage Type

N/A

UFS 4.1

Expandable Storage

Yes Up to 32 GB

N/A

Network & Connectivity

SIM Slot(s)

Dual SIM

SIM Type

N/A

SIM1: Nano SIM2: Nano

Network Support

5G Not Supported

5G 4G

VoLTE

N/A

Yes

SIM 1

N/A

5G Bands:

FDD N1 / N2 / N3 / N5 / N7 / N8 / N12 / N18 / N20 / N25 / N26 / N28 / N66
TDD N38 / N40 / N41 / N48 / N77 / N78 / N79 / N80 / N81 / N83 / N84 / N89

N/A

4G Bands:

TD-LTE 3500(band 48) / 2600(band 38) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39) / 3500(band 42) / 3700(band 43)
FD-LTE 1700(band 66) / 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) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26)

SIM 2

N/A

5G Bands:

FDD N1 / N2 / N3 / N5 / N7 / N8 / N12 / N18 / N20 / N25 / N26 / N28 / N66
TDD N38 / N40 / N41 / N48 / N77 / N78 / N79 / N80 / N81 / N83 / N84 / N89

N/A

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39) / 3500(band 42) / 3700(band 43) / 3500(band 48)
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 12) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26) / 1700(band 66)

SAR Value

Head: 1.2 W/kg

N/A

Wi-Fi

Yes Wi-Fi

Yes Wi-Fi 4 (802.11 b/g/n)

Yes Wi-Fi 7 (802.11 be/ax) MIMO

Wi-Fi Features

N/A

Wi-Fi Direct Mobile Hotspot

Bluetooth

Yes

Yes v6.0

GPS

Yes

Yes with A-GPS

Yes with A-GPS Glonass

NFC

N/A

Yes

IR Blaster

N/A

Yes

Multimedia

Audio Jack

3.5 mm

USB Type-C

Sensors

Fingerprint Sensor

N/A

Yes

Fingerprint Sensor Position

N/A

On-screen

Fingerprint Sensor Type

N/A

Ultrasonic

Other Sensors

Proximity sensor Accelerometer

Accelerometer

Light sensor Proximity sensor Accelerometer Compass Gyroscope

Compare Prices

Not Available in any store

₹159,999

@ Amazon