Stores in Hong Kong remain sold out of Apple’s iPhone 5 as overwhelming demand continues. In a note to clients — as reported by “AppleInsider” (– Topeka Capital Markets analyst Brian White that’s expected to spread soon to mainland China, as carrier China Unicom is said to be gearing up for the iPhone 5 launch.

He said all of the stores he has visited in Hong Kong were sold out of the iPhone 5, and described the city as having “iPhone 5 fever.”

“At Apple’s retail store, the iPhone 5 can be ordered online and a lottery process determines who is eligible for pickup at the store the next day,” he tells clients. “Based on our conversations, you might have a better shot at winning the lottery than getting the iPhone 5 the next day.”

Meanwhile, China Unicom is said to have sold out completely of the iPhone 4S at some of its stores, White says.