# China SMS registration and template guidelines

According to regulations in China, SMS messaging is restricted to Long Codes for compliance purposes. Typically, to help end-users identify message senders, signatures enclosed in Unicode【】brackets are often added at the start of a message.

Registration of templates is mandatory as any unregistered templates will be rejected. You must send an exact match of the template you have registered.

Before you begin, check the basics of [China coverage, restrictions, and current regulations](https://www.infobip.com/docs/essentials/getting-started/sms-coverage-and-connectivity).

Important  
Effective **05 December 2025** at 18:00 China Standard Time (UTC+8), which corresponds to 05 December 2025 at 10:00 UTC, the China **generic signature** option will be **discontinued with immediate effect**

From this time onward, all traffic from brands that are not fully registered for China will be **blocked**

## Registration requirements

The **signature** is one of the most important items for SMS registration in China. The signature can mirror the sender's name since only the Long Code will be displayed on the end user's handset. The signature is added by default so there is no need to add the signature in the message when sending it.

Check out the following signature restrictions:

- It is strongly recommended to use a **Chinese signature**, as **English signatures are highly likely to be rejected by suppliers**. The signature must be consistent with the **registered trademark**, **company name**, **or ICP filing** to ensure compliance.
- The signature can consist of 2-8 Chinese characters, with a minimum requirement of 2 characters.
- Numbers, white space, and special characters should not be included in the signature.
- Only `【】` brackets can be used to register the signature. If `[ ]` brackets are used, the message will not being processed and will be directly blocked by the MNO.

### SMS content regulations [#sms-content-regulations-in-china-registration-requirements]

In accordance with the "Notice on Further Clarifying the Relevant Requirements for Port Short Message Services" and the "Implementation Rules for the Operation and Access Management of Port Short Message Services," issued by the Ministry of Industry and Information Technology (MIIT), new, stricter regulations have been introduced to protect user rights and improve market governance. Effective immediately, Chinese telecom operators will enforce tighter controls on SMS content.

All telecom networks across China and its administrative regions are required to promptly implement these regulations, which are designed to clean up and regulate the SMS service market. As a result, there may be instances where traffic is blocked without prior notice, potentially affecting legitimate and registered customer traffic. To help mitigate potential issues, we are providing the following key information for our customers.

### Documentation requirements [#document-requirements-registration-requirements]

For both international and local clients handling financial and non-financial traffic, the following documentation is required:

- China business license: Issued by the mainland China government and Trademark Certificate.
      - If the signature corresponds to the company name from the Business License, you can provide the Business License only.
      - If the signature corresponds to the trademark, you must provide both the Business License and the Trademark Certificate.
- China citizen ID and the Chinese mobile phone number

### Template registration [#template-registration-registration-requirements]

For template registration, provide all the templates you intend to use. You may submit them via an Excel document. Be sure to highlight the variables that are not fixed and can be personalized based on the recipient of the SMS.

Example: "XXXX is your OTP," where "XXXX" will change depending on the situation.

Note  
For promotional traffic, the opt-out text "拒收请回复R" (Reply "R" to opt out) is automatically added by default, regardless of whether the message content is in English or Chinese. Clients may request to add the opt-out text themselves; however, please inform [cpaas_registrations@infobip.com](mailto:cpaas_registrations@infobip.com). Please note that the opt-out text must **always remain as "拒收请回复R"—no customization is allowed.

Once all requirements and documents are completed, you can:

- Direct customers (end customers) - start the Sender ID registration process [here](https://portal.infobip.com/channels-and-numbers/channels/sms/overview), and click the **Request Sender** button under Alphanumeric Sender ID. Provide the necessary details and submit the request.
- Wholesales/partner - contact [wholesale_registrations@infobip.com](mailto:wholesale_registrations@infobip.com) and your dedicated account manager, and provide the documents along with the required sender information.