China Mobile Hong Kong APN Settings for iPhone Android HTC:

1. China Mobile HK APN Settings for iPhone:

Go to Settings-> General Settings-> Network->Turn ON  Cellular Data Network)- > Select  Cellular Data Network > APN and enter the following details
Cellular Data:
APN: CMHK
Username: Blank
Password: Blank
MMS:
APN: CMHK
Username: blank
Password: blank
MMSC: http://mms.hk.chinamobile.com/mms
MMS Proxy: 172.31.31.36:8080
MMS Message Size: 102400
MMS UA Prof URL: Blank

2.China Mobile Hong Kong APN Settings for Android

Go to Menu -> Settings -> Wireless & networks-> Mobile networks -> Access Point Names -> New APN and enter the following details there

Internet APN Settings:

Name : CMHK
APN : CMHK
Proxy :  Not Set
Port : Not Set
Username : Not Set
Password : Not Set
Server : Not Set
MMSC : Not Set
MMS Proxy : Not Set
MMS Port : Not Set
MCC : 454
MNC : 12
Authentication type : Not Set
APN Type : default (or) internet

MMS APN Settings:

Name : CMHK MMS
APN : CMHK
Proxy : Not Set
Port : Not Set
Username : Not Set
Password : Not Set
Server : Not Set
MMSC : http://mms.hk.chinamobile.com/mms
MMS Proxy : 172.31.31.36
MMS Port :8080
MCC : 454
MNC : 12
Authentication type : Not Set
APN Type : mms