6. How well will the iPhone sync with Windows applications? Jobs said the iPhone will sync with your desktop-based data -- contacts, calendars, photos, notes, bookmarks and e-mail accounts -- without giving specifics beyond the fact that iTunes will serve as the synchronization application. Will it sync seamlessly with Microsoft Outlook? Lotus Notes? Other personal information manager (PIM) and e-mail applications? Which ones? How well will all this work?

7. Will businesses be able to use the iPhone? Jobs dissed Treos, BlackBerrys and other devices for their lack of usability. But these companies spend enormous resources on building back-end infrastructure. These systems enable businesses to roll out programs that meet company objectives around regulatory compliance, data security, cost reduction and more. The success of these products is based in part on their enterprise and business solutions. How ready is iPhone for business?

8. Will the iPhone support Word, Excel and PowerPoint documents? Jobs says you can synchronize the iPhone with e-mail -- and even pointed to IMAP support, including Microsoft Exchange -- but what about attachments? Without support for standard office documents, the iPhone is a non-starter for most business users.

9. Will you be able to use your iPhone as a modem for your laptop? If not, this could be a showstopper for many traveling business people.

10. Will the iPhone scratch or peel? Previous Apple products, including some iPods and notebooks, had serious problems with scratching and peeling. People use and abuse their cell phones even more than they do other devices. Will Apple make the iPhone rugged enough to avoid embarrassing blog write-ups about scratching, peeling or other materials defects? Will the iPhone be too slippery to use without dropping?