CEO Brian Roberts on Tuesday announced that Comcast will enter the wireless phone market by mid-2017 as a mobile virtual network operator. A 150-strong Comcast Wireless team, headed by Greg Butz, is “getting ready next year … to launch a WiFi and MVNO-integrated product,” Roberts said at the Goldman Sachs Annual Communacopia Conference in New York. The idea is to sell Comcast’s “very best customers” — 28 million of them — “some sort of multi-package bundle” that will let the company sell them more products, he remarked.