The signature under the WeChat background wall is the signature of WeChat. We can edit freely in the settings, as long as we find our avatar and click more information, we can enter editing.

How to set the signature under the WeChat background wall:

1. First, we click on our "avatar".

2. Then click "More Information".

3. Then we click "Personalized Signature".

Finally, you can edit it and click Save.

Extension: background picture settings