A lot. Frankly, I don't know. But I think it will be really a lot. Is it realistic that iPhone will be coming to China soon? Probably. At least that's what China Mobile CEO said today.
However, in my opinion it won't be that easy for Apple to make the already trusted business model get working in China (and in Asia generally). China Mobile's position puts this assumption even closer to reality. Wang Jianzhou, China Mobile's CEO has stated that he doesn't like some of the new business models emerging in the mobile phone industry. Of course he has been implying the revenue sharing model between the handset manufacturers and the mobile operators in the first turn.
Apple plans to roll out iPhones in Asia next year and of course China Mobile, the world's largest mobile phone operator with its 350 million customer base would be the best choice for the Cupertino-based company.