Hi Melvin,
Please take a look at these two blog posts to see if it help in what you were looking for.
http://scn.sap.com/community/developer-center/mobility-platform/blog/2014/10/27/introduction-to-httpconversationmanager-and-saml2-auth-in-mobile-sdk
http://scn.sap.com/community/mobile/blog/2015/04/23/conversation-manager-developer-guide-for-ios
Regards,
Chung Yu
SAP Senior Support Engineer