Stankey [best name evar]acknowledged that AT&T has faced some difficulties, particularly in cities like New York and San Francisco. But he said the company is “closing the gap.” He said there are periods of time during the week in some sections of Manhattan where nearly 70 percent of the phones active on its network are data-intensive devices. He said to deal with this surge in usage, AT&T is increasing 3G radio capacity in those trouble areas by more than one third. The company will also add additional radio network controllers on existing cell sites. As for San Francisco, Stankey blamed the poor network performance on zoning issues that have prevented the company from getting new cell phone towers up. But he said the company was been working to resolve these issues. And AT&T expects to add new cell towers in the Bay Area in 2010. And it’s boosting capacity at convention centers, sports stadiums and along public transportation routes.