We are using Adaptive Routing throughout Hong Kong which will ensure several routes are constantly being tested and the optimum one will be used for your traffic.
For ChinaUnicomHK (45407) and ChinaMobileHK (45412):
All senders are replaced by local Hong Kong numbers to ensure delivery.
For CSL (45400) , Hutchison (45404) , SmarTone (45406) and PCCW (45416)
Alpha senders are supported, meanwhile non-alpha senders are replaced by local Hong Kong numbers or “SMS” as an alpha senderID to deliver.
There are no additional content restrictions beyond those in our Acceptable Use Policy
Concatenated SMS are supported on all Hong Kong networks.
Other features/restrictions of note:
Handset delivery receipts are supported on all Hong Kong networks.