If you are a mobile phone user, you need to set it up. Take Apple's mobile phone as an example. The specific operation is as follows:
1. Open the QQ main interface and click the QQ avatar in the upper left corner.
2. Click on the blank area next to the QQ avatar and name.
3. Click on the personalized signature edit bar below the QQ avatar and name.
4. Enter your personalized signature in advance, where you can set the address and change the font you want.
5. After entering, click Save and Publish at the bottom.
6. After the prompt is published successfully, the personalized signature will be modified for others to see.