I wrote this thread for another board, but thought it would be useful here as well. Obviously let me know if there are any inaccuracies. I have got most of the information from the various network websites.
As far as I know there are two options in HK for SIM only data plans, one of them is on the 3G network (this is only for broadband modems / mifi devices, I don't know it will work in a smartphone) and the other is on 2G EDGE.
Networks
Three (3HK)
China Mobile (Peoples)
Plan information on websites
3HK HSDPA Broadband Access Rechargeable SIM
Peoples Mobile Data Prepaid SIM Card
Frequency
3HK: 3G 2100 MHz
Peoples: 2G EDGE 1800 MHz
Where to get the SIM cards
You should be able to pick them up at the airport, but I am not sure of this.
You can definitely pick them up at 3HK or Peoples stores in HK.
In addition you may be able to pick up the SIM cards from various 7-11's or Circle Ks (but I have not verified this).
3HK also sell their SIM cards at the following locations: ParknShop (supermarket), Fortress (electronics retailer), Watsons (pharmacy), Taste (supermarket) and Citicall (electronics retailer).
There are no requirements in terms of proof of address, ID, etc. Just pay the cash and you will get the SIM card.
Initial costs & validity
3HK
- HK$98 (this counts towards your call credit)
- 180 days from last top up
Peoples
- HK$139 (this counts towards your call credit)
- 180 days from last top up
Charges
3HK
- Data: HK$2 per MB, capped at HK$28 per day and HK$298 per month
- Full list of charges: three.com.hk 3G 香港
Peoples
- Data: HK$78 per every 30 days
- Full list of charges: Charges_China Mobile Hong Kong
Refill methods (for travellers)
3HK
- Voucher (can be purchased at 7-11's, Circle K, 3HK shops & various other retailers)
- Internet via credit card (note, the recharge website is only compatible with Internet Explorer)
- [There are other refill methods, but these normally are reserved for HK residents]
- More information: three.com.hk 3G 香港
Peoples
- Voucher (can be purchased at 7-11's, Circle K, Peoples shops & various other retailers)
- Internet via credit card
- [There are other refill methods, but these normally are reserved for HK residents]
- More information: Refill Methods_China Mobile Hong Kong
APN
3HK
- ipc.three.com.hk
Peoples
- peoples.net
I think I have provided all the information required, however do let me know if anything is missing.