Comcast is rolling out Xfinity same-day internet service in select markets, letting new customers get a gateway delivered within hours and activate service the same day through the Xfinity app. The launch covers nearly 20 markets (including Atlanta, Chicago, Denver, Houston, Nashville, Philadelphia, and San Francisco) and also includes same-day pickup at 700+ Xfinity retail locations. It’s a direct response to T-Mobile’s rapid 5G Home Internet delivery model.