O2 X7
#10384
Siemens ST55
#11779Category Breakdown
O2 X7
Siemens ST55
Performance
12.55.3
Camera
39.60.0
Display
30.619.0
Battery
5.25.4
Build
0.20.2
Connectivity
1.01.0
Audio
0.08.9
Overall
10.34.1
Summary
- The O2 X7 features a slightly more advanced build quality with a compact design, measuring 85 x 41 x 21 mm and weighing 83g, compared to the Siemens ST55, which is larger at 99 x 47 x 22 mm and weighs 87g.
- In terms of display, the O2 X7 offers a higher resolution of 128 x 160 pixels and supports 256K colors, while the ST55 has a resolution of 120 x 160 pixels with 65K colors.
- Performance-wise, the O2 X7 has 7GB of RAM, significantly enhancing its capability over the ST55, which lacks RAM specifications.
- The O2 X7's camera is also superior with a 1.3 MP rear camera, whereas the ST55 only has a VGA camera with no video capability.
- Battery capacity is slightly lower in the O2 X7 at 730 mAh compared to the ST55's 750 mAh, but both lack advanced charging features.
- Lastly, both devices lack modern software experiences and connectivity options, limiting their functionality.
Side-by-side Specification Comparison
O2 X7
Siemens ST55
General
Release Date
2005
2003
Announced
2005
2003
Description
N/A
N/A
Display
Size
N/A
N/A
Type
TFT, 256K colors
TFT, 65K colors
Resolution
128 x 160 pixels
120 x 160 pixels, 7 lines, 4:3 ratio
PPI
128
120
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
7MB
N/A
Expandable Storage
✗
✗
Card Slot
No
No
Camera
Main Camera
1.3 MP
VGA
Main Camera Features
LED flash
N/A
Front Camera
N/A
N/A
Front Camera Features
N/A
N/A
Video Recording
Yes
No
Selfie Video
N/A
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
730 mAh
750 mAh
Battery Details
Removable Li-Ion 730 mAh battery
Removable Li-Ion 750 mAh battery (EBA-595)
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
85 x 41 x 21 mm (3.35 x 1.61 x 0.83 in)
99 x 47 x 22 mm (3.90 x 1.85 x 0.87 in)
Weight
83 g
87 g
Materials
N/A
N/A
Colors
Blue
N/A
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Mini-SIM
Mini-SIM
Network
GSM
GSM
Network Speed
N/A
N/A
5G
✗
✗
4G
✗
✗
WiFi
No
No
Bluetooth
No
No
NFC
✗
✗
USB
N/A
N/A
IR Blaster
✗
✗
Headphone Jack
✗
✗
Radio
✗
✗
Positioning
No
No
Audio
Stereo Speakers
✗
✗
Loudspeaker
No
Yes
Audio Jack
No
No
Software & Security
Operating System
N/A
N/A
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
N/A
N/A