Apple sold 17 million iPads last quarter, a new record for the company. The iPad accounts for 91 percent of all tablet web traffic and now has a 68 percent market share, compared with last year's 62 percent.
"I don't know what these other tablets are doing," Cook said. "They must be in warehouses or store shelves or maybe in peoples' bottom drawer."
The number of mobile gamers surpassed the number of core gamers in the US this year, rising to take 22 percent of the market, which includes 211.5 million people.