Migrating Windows Runtime apps to Windows Phone 8.1
This section covers porting apps from Windows 8.1 to Windows Phone 8.1. The topics in this section show you how to port your projects in Microsoft Visual Studio and note API behavior changes that could affect migrated apps.
Note You must be running Windows 8.1 with Microsoft Visual Studio 2013 installed. Your app built for Windows 8.1 will not run on Windows Phone 8.1 without taking these steps.