O2 XDA IIs
#8145
Siemens SX66
#11238Category Breakdown
O2 XDA IIs
Siemens SX66
Performance
61.861.8
Camera
41.80.0
Display
53.453.4
Battery
43.543.5
Build
66.866.8
Overall
52.842.4
Summary
- The O2 XDA IIs and Siemens SX66 both feature a 3.5-inch TFT resistive touchscreen with identical resolutions and pixel densities, offering similar display quality.
- In terms of performance, the Siemens SX66 has a slightly faster Intel Xscale PXA272 CPU at 520 MHz compared to the O2's 400 MHz PXA263, though both share 128MB of RAM.
- Both devices have a VGA rear camera with no optical image stabilization and lack a front-facing camera.
- The O2 XDA IIs is equipped with a 1490 mAh battery, while the Siemens SX66's battery capacity is unspecified.
- Build quality is comparable, with the O2 being slightly thicker at 19 mm versus the SX66's 18 mm, but both weigh the same at 210 g.
- Both run on Microsoft Windows Mobile 2003 SE PocketPC, providing a similar software experience.
Side-by-side Specification Comparison
O2 XDA IIs
Siemens SX66
General
Release Date
2004
2004
Announced
2004
2004
Description
Produced by HTC. Functionally identical toQtek 9090,i-mate PDA2k, T-Mobile MDA III and Orange SPV M2000.
N/A
Display
Size
3.5"
3.5"
Type
TFT resistive touchscreen, 65K colors
TFT resistive touchscreen, 65K colors
Resolution
240 x 320 pixels, 4:3 ratio (~114 ppi density)
240 x 320 pixels, 4:3 ratio (~114 ppi density)
PPI
240
240
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
N/A
N/A
CPU
Intel XScale PXA263 400 MHz
Intel Xscale PXA272 520 MHz
GPU
N/A
N/A
Memory
128MB RAM, 96MB ROM
128MB RAM
Expandable Storage
✗
✗
Card Slot
MMC/SDIO
SDIO/MMC
Camera
Main Camera
N/A
N/A
Main Camera Details
VGA
N/A
Front Camera
N/A
N/A
Front Camera Details
N/A
N/A
Video Recording
Yes
N/A
Selfie Video
N/A
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
1490 mAh
N/A
Battery Details
Removable Li-Po 1490 mAh battery
Removable Li-Ion battery
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
125 x 71 x 19 mm (4.92 x 2.80 x 0.75 in)
125 x 71 x 18 mm (4.92 x 2.80 x 0.71 in)
Weight
210 g
210 g
Materials
N/A
N/A
Water Resistance
N/A
N/A
Colors
N/A
Silver
Foldable
✗
✗
Connectivity
SIM
Mini-SIM
Mini-SIM
Network
GSM
GSM
Network Speed
N/A
N/A
5G
✗
✗
4G
✗
✗
WiFi
Wi-Fi 802.11b
Wi-Fi 802.11b
Bluetooth
Yes
Yes
NFC
✗
✗
USB
Proprietary
Proprietary
IR Blaster
✗
✗
Headphone Jack
✗
✗
Radio
✗
✗
Positioning
No
No
Software
Operating System
Microsoft Windows Mobile 2003 SE PocketPC
Microsoft Windows Mobile 2003 SE PocketPC
OS Version
Microsoft Windows Mobile 2003 SE PocketPC
Microsoft Windows Mobile 2003 SE PocketPC
Security
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
N/A
N/A
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
No
No