This white paper describes how to build Windows Phone 7 applications with Microsoft SharePoint 2010 Products and Microsoft Unified Access Gateway (UAG). It provides business scenarios that can benefit from custom mobile applications that authenticate by using UAG and use the features of SharePoint 2010 Products for collaboration. It also introduces the concepts and code that are required to access SharePoint list data in a secure manner from a Windows Phone 7 device, and provides steps to install and configure a non-production instance of UAG for the purposes of developing and testing mobile applications for SharePoint 2010 Products.