his article describes how to configure an Exchange 2013 account on your Apple iOS device. The administrator of your account must verify that an ActiveSync license is attached in your account via the Cloud Control Panel. If any Internet connectivity issues prevent you from successfully setting up Exchange, contact your wireless provider or ISP.
Note: The images in this article show iPhone 5 running iOS 7. Though screens on other iOS devices will differ, the process is the same.
On the home screen of your device, tap Settings > Mail, Contacts, Calendars > Add Account.
Tap Exchange and enter your email address , password, and an optional description. Tap Next.
Make your selections and tap Save.
Note: If autodiscovery is not configured on your domain, the device displays the server settings page. Perform the following steps to complete your configuration.
On the server settings page, tap the Server field and enter outlook.office365.com. Leave the Domain field blank - enter your email address and your current Office 365 Password. Then click Next.
Select the services that you want to synchronize from the Exchange server. Then tap Save.
You have successfully added your Exchange email account on your iOS device.
Note: Depending on how much data is in the mailbox, it might take some time before your information is completely downloaded into your device.
You can also download the Outlook App Icon from the Apple store for free.
You also have the option to access office365 emails from the Web Browser that you use on the phone https//outlook.office365.com . It is advisable to always log out of any accounts you are signed into