To help you stay informed of and comply with the latest regulatory requirements on SMS delivery from the carriers, this topic summarizes recent major policy changes and will be promptly updated as new policy notices are released. We recommend that you bookmark this page and check back regularly to ensure the continuous compliance of your SMS sending practices, avoiding business disruptions caused by message blocking or service suspension.
Carrier | Effective date | Announcement |
China Mobile | December 1, 2025 | [November 18, 2025] China Mobile's controls on referral information in messages |
China Mobile | July 10, 2025 | [July 3, 2025] China Mobile's controls on SMS template registration and referral information |
China Unicom | June 30, 2025 | [June 25, 2025] China Unicom's controls on SMS template registration and referral information |
China Telecom | May 30, 2025 | [May 27, 2025] Requirement for SMS template registration by China Telecom |
China Telecom | May 20, 2025 |
Because carriers implement policies at different times and with varying levels of enforcement, SMS messages that contain traffic diversion information, such as URLs or contact information, may be delivered by some carriers but fail to be delivered by others. Enforcement strictness also varies by province, and actual blocking results are subject to notices from provincial carriers. To ensure delivery across all three carriers, use templates that do not contain URLs.
The above interception and control measures for traffic diversion messages are ongoing policies. No operator has announced a timeline for resumption or lifting of these restrictions. Specific implementation is subject to actual notices from provincial operators.