What the heck is so special about the I-Phone?

My HCT/Telecom MDA Compact III has a touchscreen just as well, HAS Bluetooth, build-in GPS, a UI that my 69 year old father understands easily (Press green phone, touch dial, speak, press red phone) AND can install additonal software. It plays MP3 too.

And that is a small one (less than 150€ with a Telecom Contract), the Bigger MDA's have more capacities.


So except the name of a company that gives HP a run for the High Prices, what is the great thing on an iPhone?