Follow the instructions below to configure your iPhone for UWF Google Apps.
Remove the old Exchange email configuration from your iPhone. In Settings, go to Mail, Contacts, Calendars. Select the email@example.com account. Press the Delete Account button.
Add the new Google Apps Setup for Mail, Calendar, and Contacts. Follow the instructions at http://www.google.com/support/mobile/bin/answer.py?hl=en&answer=138740.
On the iPhone, old email messages will be listed by the date and time that they were copied from the old email system, not the date and time that they were actually sent to you.
When you "delete" an iPhone message, it is not deleted but moved to an archived status.