Question: how to connect roku tv to xfinity wifi?
Answer:  Open the "XFINITY Stream Beta" channel on your Roku device.
 Select Get Started using the Roku remote. ... 
 Once on the activation code screen, using a computer or mobile device, go to https://xfinity.com/authorize and type in the 6 digit code displayed on your Roku.
 The XFINITY login page will load.