This document provides tips for porting existing apps to the Windows Phone platform. It notes that there is no automated tool to port code from other platforms like iOS or Android, and porting will require effort. It then lists 7 tips, including differentiating the app for Windows Phone by taking advantage of its features, embracing the Metro design language, using cloud services, leveraging third party controls, learning Silverlight/XNA, and marketing for Windows Phone. The document aims to provide guidance on porting existing apps to the new Windows Phone platform.