You can get one2free prepaid SIM card at the airport right after you land, $100 credit including the SIM to put in your phone. Like vinny mentioned, it's $78hkd/wk for 3G data so if you need more than one week, you'll have to get refill voucher/top ups which can be easily purchased at any 711 or CircleK shops in town (or just get them at the airport shop). Do note the airport shop is actually on the departure level though. Details here »
http://www.beready.net/travel/ho ... -hong-kong-airport.
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Last edited by lad at 9-3-2013 07:17 ]