The data will be kept on servers provided by China Telecom, the countrys third-largest wireless carrier, Apple said in a statement on Friday.
Apple attributed the move to an effort to improve the speed and reliability of its iCloud service, which lets users store pictures, e-mail and other data. It also coincides with Apples bid to support its iTunes Store in China, where local downloads of audio and video have been steadily increasing.
The storage of user data in China represents a departure from the policies of some technology companies, notably Google, which has long refused to build data centres in China due to censorship and privacy concerns. Apple takes user security and privacy very seriously, it said. We have added China Telecom to our list of data centre providers to increase bandwidth and improve performance for our customers in mainland china. All data stored with our providers is encrypted. China Telecom does not have access to the content.
The encryption keys for Apples data on China Telecom servers would be stored offshore and not made available to China Telecom, a person familiar with the situation said.
Apple has claimed to have devised encryption systems for services such as iMessage that even Apple itself cannot unlock. But some experts expressed scepticism that Apple would be able to withhold user data in the event of a government request.
If they're making out that the data is protected and secure thats a little disingenuous because if they want to operate a business here, that'd have to comply with demands from the authorities, said Jeremy Goldkorn, director of Danwei.com, a research firm focused on Chinese media, internet and consumers. "On the other hand if they don't store Chinese user data on a Chinese server they're basically risking a crackdown from the authorities."
A spokesman for China Telecom declined to comment.