You can access your SharePoint Online site on an internet-connected Windows Phone. Connecting to your site with a Windows Phone gives you the flexibility to access information on sites, collaborate with colleagues, access documents, view updated site content, and otherwise stay connected with your work.
Use the following procedures to open your site.
Open your team site
Open Internet Explorer Mobile, type the URL for your team site into the address bar, and then tap the arrow.
When the Office 365 login screen appears, type your username and password, and then tap Sign In.
You should be able to view the mobile version of your team site.
Open the public website
Open Internet Explorer Mobile, type the URL for the public website into the address bar, and then tap the arrow.
You should be able to view the public website in the mobile browser.