A rumor has been going through the Chinese Web that China Unicom (CHU), one of the major mobile service providers in China, has signed with Apple (AAPL) and will introduce Apple's 3G iPhone to the Chinese mainland in August this year.

News from Apple's global developer conference says that iPhone will add support to two new languages of Chinese and Japanese and will embed a Chinese hand written inputting method.

However, China Unicom has not made any comment.

Apple previously held negotiations with China Mobile, a main competitor of China Unicom, on bringing iPhone to China, but the negotiation was fruitless as iPhone's operation pattern of sharing the calling fee with the operators does not conform to China's national situation.