China Requires ID for Cellphone numbers http://snapvoip.blogspot.com/
Sighting that more than 320 million cell phone users who are unidentifiable and the growing numbers of mobile spammers, pornography and fraud, Chinese government has began to tighten the knot. Most Western countries too require an ID and / or credit card information when purchasing a Cellphone or a SIM card to be used on a phone or a mobile device.
But the question seem to be if the Chinese government is capable of of providing security for personal data. It is certainly large number of mobile users, 800 million at the count and growing, I doubt it would be different from how the other countries handle the personal data. Knowing the paranoia of the Chinese government in the past, they may already have a massive database on it's people and just need to add a field for the cell phone number. The Chinese Consumer database certainly will be very large.
China plans to impose the rules through
NYT has a fine article that allows you to draw your own conclusions;