What should I do if I send a short message to 12309 by mistake?

SMS has no function of withdrawing messages.

You can set the steps to cancel sending a short message immediately after sending it by mistake:

1, open the SMS first, enter the page and click more at the bottom of the page.

2. After opening and following, select the opening setting in the pop-up box.

3. After opening the settings page, you can see that there is cancellation in the middle of the page.

4, and then turn on this cancellation function. Click the message to cancel within 6 seconds after the short message is sent.

5. After we send the message, there will be a display below the message. Double-click the message content to cancel sending, followed by the countdown of seconds.

After double-clicking the information within 6.6 seconds, it will be automatically withdrawn, and then the content of the information will return to the edit bar to continue editing again.

This experience sharing is operated on Huawei mobile phones.