How to hide qq personalized signature from others is not supported. You can set it to asynchronous calling, first enter QQ settings, then find the privacy function, and then turn off synchronous calling. The specific operation steps are as follows:
1. Open QQ, click the avatar in the upper left corner, and then click Settings.
2. Click Privacy in Settings.
3. Synchronize the personalized signature to the switch and turn it off.
Taking Redmi k40 as an example, this paper is suitable for version QQV8.8.3 of MIUI 12.5 system.