RoamTheWorldCellPhones.com

Cellphone GSM Frequencies: 900/1800

(This means you will need a GSM cellphone that will work on 900MHz or 1800Mhz to use it in Hong Kong.)

Cellular carriers for Hong Kong

CHINA MOBILE HONG KONG COMPANY LIMITED (China Mobile HK)

Frequency: GSM 1800
Website: www.hk.chinamobile.com

Coverage Map

CSL Limited

Frequency: GSM 900/1800
Website: www.hkcsl.com

Coverage Map

Hong Kong Telecommunications (HKT) Limited (PCCW)

Frequency: GSM 1800
Website: www.pccwmobile.com

Coverage Map

Hutchison Telecom (HK) Ltd (3)

Frequency: GSM 900/1800
Website: www.three.com.hk

Coverage Map (NONE)

SmarTone Mobile Communications Limited (SmarToneVodafone)

Frequency: GSM 900/1800
Website: www.smartone-vodafone.com

Coverage Map (NONE)

If you've used either of these networks or roamed in Hong Kong, please post about your experience and the cost. Feel free to ask questions.