Best Buy's domestic revenue declined 0.8 percent, but the company said that was better than the broader consumer electronics industry, which experienced deeper declines. During an conference call with the media Thursday, Hubert Joly, Best Buy's chairman and CEO, said that he had expected that sales of mobile devices would be weak as fewer customers upgraded their devices because of a lack of new technology. But he said sales were softer than expected and the declines more than offset sales growth in home theater, major appliances and wearable tech items like smart watches.