As of 2014, there are six mobile operators that offer mobile connectivity for tourists. Of these, the three largest are China Mobile, 3, and CSL. Also listed is a tourst sim offered in partnership with the tourism board of Hong Kong (through PCCW).
Top Prepaid SIM options
1. PCCW (Discover Hong Kong Tourism SIM)
Cost: Two options: 1. 5-day SIM (69 HKD – $9 USD), with 1.5 gb data and free local calls, or 2. 8-day SIM (96 HKD – $12 USD), with 5 gb data and free local calls. These cards cannot be reloaded after the 5 or 8 days. Link
2. CSL One2Free SIM
Cost: sims cost 98 HKD ($12 USD), 18 HKD ($2.30 USD) for 1.25 gb data lasting one day, or 38 HKD ($5 USD) for 2 gb data lasting 3 days. This card can be reloaded. Link
3. China Mobile
Cost: sims cost 98 HKD ($12 USD), 9 HKD ($1 USD) for unlimited data lasting one day, or 18 HKD ($2 USD) for unlimited data lasting 7 days. Link
Where to Buy: Anywhere
Call for Information: +852 2508 1234
Call for Emergency: 999