As part of a larger New York Times article discussing the problems some iPhone users are having with AT&T’s network, AT&T CTO John Donovan said the company has had a hard time keeping up with data demand. “It’s been a challenging year for us,” said Donovan. “Overnight we’re seeing a radical shift in how people are using their phones,” he said. “There’s just no parallel for the demand.” The report states that the company…