Actually Apple iPhone is remarkable for three main reasons.
1. IPOD quality music,
2. Brilliant Safari web browser
and
3.The iPhone has three sensors:
A proximity sensor – when the iPhone is brought to one’s ear the touchscreen shuts off. This is to save battery power and to prevent accidental contact with the user’s face and ears from triggering phone features.
An ambient light sensor that adjusts screen brightness and saves power.
An accelerometer, which senses the orientation of the phone and changes the screen accordingly.
Moreover, it will run by the new operating system OS-X.
Though we can expect to install softwares and applications apple iPhone makers restricted its software making range.
It will be first available in USA in June and Canada in Q4 of 2007 and will be released in Euope and Asia in late 2007 and early 2008 respectively.
In a deal concluded from secretive discussions beginning in February 2005, Cingular Wireless will be the exclusive carrier of the iPhone in the United States and will remain so until 2009.The iPhone may be purchased only with a two-year service plan with Cingular.
The initial U.S. release will be offered in two configurations with two different prices, based on a 2-year phone service contract: a 4 GB model for US$ 499 and an 8 GB model for $ 599.

The following are the parts being used in the iPhone and their suppliers:
Samsung Electronics – application/video processor (ARM Cortex-A8)
Marvell Inc. – Wi-Fi chips
Infineon Technologies AG – baseband & RF chips
Broadcom Corp. Inc. – touch screen controller
Cambridge Silicon Radio – Bluetooth
Largan Precision – camera lens
Altus Technologies – camera module assembly.

The layout of the music library differs from previous iPods, with the sections divided more clearly alphabetically, and with a larger font. The Cover Flow, like that on iTunes, shows the different album covers in a scroll-through photo library. Scrolling is achieved by swiping a finger across the screen.

Like the fifth generation iPods introduced in 2005, the iPhone can play video allowing users to watch TV shows and films. Unlike other image-related content, video on the iPhone plays only in the landscape orientation, when the phone is turned sideways. A two-fingered tap is used to switch between wide-screen and full-screen aspect ratios.

It will have 4 gig/8 gig flash chip based memory that will be enough for a mobile phone.
Besides, the one good reason behind me to buy iphone is it has the fresh and newest technology that could make any other mobile phone to rethink or reinvent mobile phones.
Thats why I am going to buy it.
Thanx.
Good question.

the iphone is costly but amazing, and i actually found a site that’s offereing cheaper ones. if you put in your zip code at http://doiop.com/myiphone , they’ll give you info on shipments and quantity of iphones at the stores