Celkon C747
#10394
Siemens U15
#10817Category Breakdown
Celkon C747
Siemens U15
Performance
5.35.3
Camera
39.639.6
Display
14.220.3
Battery
15.26.5
Build
0.20.2
Connectivity
6.414.9
Audio
8.90.0
Overall
10.38.9
Summary
- The Celkon C747, released in 2010, features a compact build with dimensions of 112 x 47 x 13 mm and weighs 128g, while the Siemens U15, from 2003, is larger at 136 x 53 x 24 mm and weighs 140g.
- Both devices have a TFT display with a resolution of 176 x 220 pixels and a pixel density of approximately 176 ppi.
- Performance-wise, both phones have 0GB of RAM and lack advanced processing capabilities.
- The Celkon C747 has a single 2 MP rear camera, whereas the Siemens U15 offers dual VGA cameras, both capable of video recording.
- The battery capacity of the Celkon is 1500 mAh, significantly higher than the Siemens' 800 mAh.
- In terms of software experience, both devices lack modern features and connectivity options, with the Celkon supporting Bluetooth 2.0 and the Siemens using a proprietary USB connection.
Side-by-side Specification Comparison
Celkon C747
Siemens U15
General
Release Date
2010
2003
Announced
2010
2003
Description
N/A
N/A
Display
Size
2.2"
N/A
Type
TFT
TFT, 65K colors
Resolution
176 x 220 pixels (~128 ppi density)
176 x 220 pixels
PPI
176
176
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
N/A
N/A
CPU
N/A
N/A
GPU
N/A
N/A
Memory
N/A
N/A
Expandable Storage
✗
✗
Card Slot
microSDHC (dedicated slot)
No
Camera
Main Camera
2 MP
2 cameras VGA
Main Camera Features
N/A
N/A
Front Camera
N/A
Yes
Front Camera Features
N/A
N/A
Video Recording
Yes
Yes
Selfie Video
N/A
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
1500 mAh
800 mAh
Battery Details
Removable Li-Ion 1500 mAh battery
Removable Li-Po 800 mAh battery (EBA-010)
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
112 x 47 x 13 mm (4.41 x 1.85 x 0.51 in)
136 x 53 x 24 mm, 140 cc (5.35 x 2.09 x 0.94 in)
Weight
128 g
140 g
Materials
N/A
N/A
Colors
Black/Gray
N/A
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Dual SIM (Mini-SIM)
Mini-SIM
Network
GSM
GSM / UMTS
Network Speed
N/A
Yes, 384 kbps
5G
✗
✗
4G
✗
✗
WiFi
No
No
Bluetooth
2.0
Yes
NFC
✗
✗
USB
microUSB
Proprietary
IR Blaster
✗
✗
Headphone Jack
✗
✗
Radio
✗
✗
Positioning
No
No
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
No
Audio Jack
N/A
No
Software & Security
Operating System
N/A
N/A
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
Accelerometer
N/A