The SMS intercepted by Xiaomi's mobile phone cannot be deleted.

1. First, in the mobile phone, find the application of the security center and click.

2. Secondly, enter the interface of the security center and click the harassment interception.

3. Then on the "Harassment Interception" page, you can see the messages that are usually intercepted by the mobile phone, and click to open the messages that need to be deleted.

4. Finally, on the SMS content page, press and hold the SMS content with a long finger, and a checkmark will appear next to the SMS content. At this point, you will see the following three options, and click Delete.