Cant Connect

We implement AD FS claims based auth on our SharePoint site. I get the AD FS login prompt when I try to connect to our site, but after submitting, the AD FS auth page sits there - blank. Does our AD FS server need anything special when handling auth requests from mobile devices? Performing the same request in the iPhones Safari browser works perfectly.

chucklz1515 about SharePoint Newsfeed, v1.3.1