If you have an Office 365 subscription that includes SharePoint Online, you can use your device to view information on sites, collaborate with colleagues, access shared documents, and stay connected with your work using your mobile device. With the SharePoint mobile apps, SharePoint Online is even more available on devices than before.
You can download and use the SharePoint mobile apps to connect to your SharePoint Online site, rather than your browser. For more information, see Set up your mobile apps for SharePoint and for OneDrive.