<Tr> <Th> International call prefix </Th> <Td> 001 </Td> </Tr> <Tr> <Th> Trunk prefix </Th> <Td> none </Td> </Tr> <P> Telephone numbers in Hong Kong are mostly eight - digit . Fixed land line numbers start with 2 or 3, Mobile (cellular) phone numbers with 5, 6 or 9, pager numbers with 7 and forwarding service with 8 . Since the end of 1989, there have been no area codes within Hong Kong . </P> <P> The telephone number for emergency services--Police, Fire Service and Ambulance--is 999 for all telephone lines . These numbers can also be used for mobile and other users: </P>

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