Sender ID:
SmarTone(45500), CTM(45501) & Hutchison(45503): : Fully Dynamic sender IDs are supported
China Telecom: All sender IDs will be changed to a random Hong Kong number to ensure delivery.
Content:
There are no additional content restrictions beyond those in our Acceptable Use Policy
Unicode:
Unicode is fully supported.
Concatenated messages:
Concatenated messages are fully supported.
Other features/restrictions of note:
Delivery Receipts:
Handset delivery receipts are supported on the below networks:
45500 SmarTone
45501 CTM
45503 Hutchison
Handset delivery receipts are unfortunately not supported for messages sent to:
45502 China Telecom
Links:
Global SMS Features Overview (Outbound only)
Global SMS Numbers Features Overview