You can connect Xfinity to Roku, by hooking it up to the internet, locating the streaming channels option, and then typing Xfinity into the Search bar. Once this is done, you can activate and watch Xfinity on your Roku stick or device. Android and iOS devices are supported by the Xfinity Stream Beta app. On-demand videos are available in more than 1000 categories. Using the cloud DVR, you can also record movies and download them offline If you're using bluetooth to watch Xfinity, you may want to see How to Connect Roku to Bluetooth Speakers or headphones Roku Ultra, Roku Express,Streaming Stick and even the Roku sound bar is compatible with Xfinity streaming beta app. Roku TVs also have support for the Xfinity Stream app. Xfinity X1 cable customers can also access the Xfinity Stream app with their set-top box. You have to use both your Comcast ID and Password in order to activate the device for streaming.