Demand for Apple Inc.'s (AAPL) iPhone 4 handsets in China still exceeds supply and China Unicom (Hong Kong) Ltd. (CHU) has taken more than 600,000 iPhone 4 orders, China Unicom's parent company said in a statement on its website Monday.

China United Network Communications Group Co. also said the company will soon launch a policy to potentially freeze iPhone buyers' deposited funds if it discovers their phone numbers aren't being used with their iPhone handsets. The move is aimed at preventing users from buying iPhone 4 handsets and reselling them at high prices, the statement said.

Apple didn't immediately reply to a request for comment.

-By Owen Fletcher, Dow Jones Newswires; 8610 8400 7702; owen.fletcher@dowjones.com
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