If your services include IQComputing’s hosted Exchange services, you can use the following steps to add an Exchange account to your iPhone.
From the Home screen tap the Settings icon, next, tap Mail, Contacts, Calendars, and then tap Add Account
From the Add Account screen tap Exchange
On the Exchange Account screen enter your full E-mail address, Password. You may then update the description of the Exchange Account, if you choose and tap Next
Your account configuration will be verified and assuming your credentials were entered correctly you will be presented with the Exchange Mail, Contacts, Calendars, Reminders and Notes Screen
Mail should be turned ON, however Contacts, Calendars, Reminders should be ON or OFF depending on your preference
Once you have all settings as desired tap Save
Your Exchange account is now configured and should be ready for use on your iPhone.