You can access email, instant messaging, documents, and other Office 365 services from your mobile phone or tablet. Supported devices include Windows Phone, iPhone and iPad, Android Phone, Nokia (Symbian OS), and BlackBerry® devices.
Links to instructions for setting up your mobile device are included here and in the Office 365 for Business portal. In your browser, go to Office 365 sign-in (portal.microsoftonline.com) and sign in with your Office 365 user ID and password. Go to Settings >Office 365 settings > Get started > Phone & tablet. Or, go to Software > Phone & tablet and then choose your device.
For general information about other phones and tablets, you can read these articles: