We had a solid second quarter and half-way through the year we’re on track to deliver on our commitments, beginning with using our record free cash flow and our asset sales to pay down our debt. We’re confident we’ll meet our year-end net debt to adjusted EBITDA target of being in the 2.5x range. We’ve started the year with good momentum and I’m confident that we’ll finish it strong. In fact, this morning we’ve raised our free cash flow guidance for 2019 to the $28 billion range, up $2 billion, and we reaffirmed all other guidance for the year.
Our teams delivered solid results across the board. Wireless is about half of our overall EBITDA and it continues to fire on all cylinders. We grew revenues and EBITDA, and had positive phone net adds, both postpaid and prepaid. Our Entertainment Group continues to stabilize and even grow its profitability. Serving a profitable and sustainable video subscriber base is our focus. WarnerMedia delivered another strong quarter with double-digit operating income growth and announced that HBO Max will be the name of our new streaming service launching next spring.
In Mexico, we grew service revenues and subscribers and continue to make progress toward profitability later this year. And Xandr grew revenues and announced that A&E, AMC and Cheddar are joining Community, our curated marketplace of advertising supply-side publishers.