For the quarter ended June 30, revenue for "Greater China", which includes the mainland, Hong Kong and Taiwan, reached US$5.7 billion, said Apple's CEO Tim Cook during a Tuesday . This was a 48 percent increase over the same quarter last year.

The company's revenue for the quarter was however down by 28 percent from the previous quarter, when Apple's Greater China revenue reached $7.9 billion. Revenue in the previous quarter was boosted by the launch of the iPhone 4S in January, first through carrier China Unicom, and then China Telecom in March.

Apple's fiscal third quarter also proceeded without the launch of its new iPad in mainland China, with sales of the device having started less than a week ago or four months after they began in the U.S. The company recently resolved a over the iPad name with a local Chinese company, which had wanted to get the tablet banned from being sold in the country.

Apple's iPhone sales, however, continue to grow "at incredible rates" in mainland China, increasing in the quarter by more than 100 percent year-on-year, Cook said. Revenue in the country was unaffected by China's slowing economy, he added.