Xfinity will let you rent a modem when you sign up for its Internet service, but you do have the option of using a third-party modem instead. Here's how.

PHILADELPHIA, PA — Comcast’s Xfinity announced the launch of Xfinity Membership, a new loyalty experience that brings customers’ favorite rewards together with even more benefits, including epic ...

Comcast’s Xfinity Mobile plans are getting a facelift today, including a new Premium Unlimited plan taking the place of the old Unlimited Plus plan. Notable changes include support for 4K video ...