Step 2. Next, please select the expansion symbol to the right of the nickname of the avatar on the screen, as shown in the figure.
Step 3: Please select "More" in the new page.
4. The fourth step, we come to more pages, please click on the personalized signature, then enter a new signature in the box, and then select OK to operate.
The above is the way to set and modify your own personalized signature in WeChat.