It proves to be too expensive

The user interface/form factor is cumbersome

It does too many things not so well, instead of one or two things really well

It suffers from poor battery life, durability, voice quality or data security

AT&T can’t hold up its end of the bargain

Apple can’t match the power of the cell phone industry’s incumbents

There’s a disconnect with demographics; 15-to-30-year-olds may be least able to afford the device

Apple moves too far away of its comfort zone and can’t master telecom supply chains

Apple has truly invented a new category of device and learned from the Motorola ROKR music player+phone

Its user interface transcends everyhing else in the category, thanks to its simplicity

Its industrial design once again delivers an unsurpassed “cool” factor

Apple’s vast army of users races to sync the iPhone with their PCs

It works within mobile broadband networks, including WiFi hotspots, WiMAX and other broadband systems

The demographics align, and 20-somethings increasingly replace their landline phones with a tablet-phone-music player

It finds a killer applications–such as visual voice mail (browsing and managing voice messages from the screen)

Businesses treat it as a secure, wireless Unix terminal that can run mission-critical applications