Apple Inc has introduced a lottery system for iPhone reservations in Hong Kong to combat scalpers who were blamed for disrupting the iPhone 4S launch on the Chinese mainland.

But, so far, the system is not being introduced in Shanghai or other mainland cities, an official at Apple Shanghai confirmed with Shanghai Daily on Tuesday.

Apple's online store in Hong Kong requires customers to submit their personal details for a chance to reserve an iPhone between 9am and 12pm each day, Apple said.