On the home screen of your device, tap Settings > Mail, Contacts, Calendars > Add Account.
Tap Exchange and enter your business email address (typically in the form Firstname.Lastname@mobap.edu), password, and an optional description.
Make your selections and tap Save.
On the server settings page, tap the Server field and enter outlook.office365.com. Tap the Domain field
and enter mobap.edu. If it asks for your username, enter it in the form Firstname.Lastname@mobap.edu. Then, click Next.
Select the services that you want to synchronize from the Exchange server, and then tap Save.
You have successfully added your Exchange email account on your iOS device.
Depending on how much data is in the mailbox, it might take some time before your information is completely downloaded into your device.