Although it may be a niggling count to the number of iPhone users in other countries, it's still a great count since the carrier does not officially carry the iPhone. However, customers do have the option to purchase one from one of the five Apple Stores in China. China Unicom on the other hand does carry the iPhone 4, and apparently some of the users from China Unicom have unofficially swapped their carrier choice with China Mobile.
Technology Nerd
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wwws, China Mobile Reports 10 Million iPhone Users, Still Doesn't Carry iPhone Officially!