There are a lot of restrictions to take into account when sending SMS to Chinese networks.


Content restrictions:

  • If there are URL links in a message, the message will be blocked.
  • Chinese networks do not support Arabic characters.


Filtering on messages: Chinese networks will filter the content of messages. It is forbidden to send adult content, as well as content which promotes properties, gambling, migration, financial services, education, healthcare, cosmetic surgery, beauty care and alcohol.


Amount of messages per day: Only 2 messages with the same content can be sent to a phone number in a day and a maximum of 100 messages (with varying content) can be sent.


Length of message content: If messages are sent in Chinese characters, they cannot contain more than 65 characters (or 62 if it is concatenated). 


Can the features below be used?


Message originator: No (the originator will be modified to ensure delivery)


Long number/virtual mobile number:  Long number overwritten (the operator will be modified to ensure delivery).


Concatenated messages: Yes


General best practices: 


  • You should get opt-in consent from each end user before sending text messages. 


  • For marketing messages you must make it easy for customers to opt-out - e.g. by sending a reply 'STOP' text.


  • To ensure that messages are not considered spam, be transparent with who you are; clearly display the name of your service / business within the message originator or within the body of the text message itself. 


Zensend recommends that customers review all suggested SMS use cases with a qualified legal team to make sure that you are acting within the law.