Carriers are offering these services and products because of a major transition to phones from Research in Motion, which relies on an added layer with the BlackBerry Enterprise Server. Forrester, in a recent survey, found that more workers are using and Android-based smartphones than BlackBerries, and that nearly half of workers are using smartphones that they chose, not devices recommended by their IT departments. Even if an IT shop requires a certain phone, workers will still bring in a second of their choosing to do work-related tasks, Forrester found.

The "bring your own phone" trend leaves room for services and products from the carriers to help companies adapt to the changes, analysts said.

Matt Hamblen covers mobile and wireless, smartphones and other handhelds, and wireless networking for Computerworld. Follow Matt on Twitter at or subscribe to . His e-mail address is .

in Computerworld's Mobile Apps and Services Topic Center.