Will AT&T Market The iPhone To Business Users?Will AT&T Market The iPhone To Business Users?

If AT&T announces that it will be marketing the phone to enterprise customers, "we'd be against it," said Ken Dulaney, an analyst with Gartner, who said he hasn't heard of such a plan from the operator. "We'd immediately tell our customers that'd be a very serious mistake."

No matter what kind of reputation a vendor has, if it's making its first phone, Dulaney would be unlikely to recommend it. "Building a phone is one of the most difficult things to do," he said.

Also, the iPhone is expected to have a number of shortcomings for business users, he said. For example, it doesn't have a removable battery. "You'd be crazy to buy without that," Dulaney said. The phone has multiple processors, which consumes more battery life than single processors, he said.

That's one reason that Avi Greengart, principal analyst for mobile devices at Current Analysis, also thinks the iPhone won't be a good option for enterprise customers. Apple has said that the iPhone will run on an OS X-based operating system and told Greengart that enterprises won't be able to write applications for the phone, he said. "Companies like to extend corporate apps to the mobile space and in order to do that you need an open OS," he said. Mobile operating system developers like Windows, Symbian and BlackBerry enable third parties to write applications based on their software.