Compare Xfinity and Optimum on internet speeds, plans, pricing and availability to choose the best provider for your home in ...

Compare Xfinity and Verizon Fios on speed, price, deals and coverage to find the best internet provider for your needs in ...

Since your Xfinity ID is typically your email, phone number, or username, you can find it from the Xfinity website, mobile app, or your Xfinity X1 cable box.

To understand the tricky territory that separates website from app, consider the example of Comcast’s Xfinity TV. When subscribers who want to watch TV online visit the cable operator’s ...