QQ demo software version: 8.9.28; Mobile phone model: oppoReno7.
The specific steps are as follows:
1. First, open QQ on your mobile phone and click on the avatar.
2. Then click on the avatar on the left.
3. Then find the signature column above and click.
4. After entering, click the History tab.
5. Then you can see the historical signature.
If you want to delete, click Manage in the upper right corner, select signature, and then click Delete below to delete.