Spears also said that with the innovation of the iPhone 3GS last summer, "most CIOs will tell you today they have very few issues around the security." Gold said he disagreed with that assessment, although there's wide concensus that each update of the iPhone has become more secure, and the coming iPhone 4 OS .

In April, said the iPhone OS 4 would have support for SSL VPN via apps from Juniper Networks and Systems, an improvement from Cisco's IPSec VPN in current versions. Also applications and e-mail will be protected via a device passcode.

Apple has made a steady, if muted, appeal to business and enterprise customers, even if many of the iPhones come into business use through individual workers who also want them for personal reasons. Apple has a saying of the iPhone: "the best phone for business just got better."

The page includes information on how both Apple and AT&T work together on enterprise rate plans.

Matt Hamblen covers mobile and wireless, smartphones and other handhelds, and wireless networking for Computerworld . Follow Matt on Twitter at @matthamblen or subscribe to Matt's RSS feed . His e-mail address is mhamblen@computerworld.com .