At a minimum, you should communicate your iPhone security policy in a written document, although your company will have to decide how best to present that document. For example, if your company has an intranet, you can make the policy easily accessible to every employee on the intranet home page. An online document also makes it easier to update the document with changes and additions to your iPhone policy.
When you finish developing the policy document, you should introduce it in person not only to reinforce the information in the document, but also to answer any questions from ...