1. Slide left and right on the phone screen to find the installed Tik Tok icon.

2. Then click the "My" tab in the lower right corner of the main interface of Tik Tok software.

3. Next, in the "My Details" page that opens, we click the "Main Menu" button in the upper right corner.

4. Then in the main menu that pops up, we click the setting item of "Edit Profile". At this time, the page of editing personal data will pop up, in which we click the setting item of "signature".