So here is the step-by-step guide on how to turn your iPod Touch (and iPhone) into a 3.5G iPhone! This is suitable for beginners as it involves no hacking at all of the iPod, and only a simple registry edit on the Windows phone.
What You Need
1) An iPod Touch or an iPhone.
2) A Phone/PDA with Windows Mobile 5 or 6.
I tested this on a HTC Ameo/Athena with WM6 but it should also work on any other touchscreen WM5 or 6. I’ve read that it will probably not work on the non-touchscreen Pocket PC versions. Your best bet is probably the O2 XDA Mini S which goes on eBay for around £150-200 new or £90-100 used. You can get it free from O2 if you really want a contract. It’s otherwise known as the HTC Wizard. Anything from the HTC range of PDA phones should be fine.
The 3G Ipod Touch and 3G iPhone