1. First open the Tik Tok main interface, then find your favorite video, select and click the three dot icons, as shown in the figure below.
2. Then click "Dynamic Wallpaper" to successfully save the small video to the live photo album of the mobile phone.
3. Then return to the main interface of the mobile phone, and then click the "Settings" option, as shown in the figure below.
4. After entering the setting interface, select the "wallpaper" option, as shown in the figure below.
5. After entering the wallpaper interface, select the "Select New Wallpaper" option, as shown in the following figure.
6. After opening the interface for selecting new wallpaper, select and click the "Real-time photo" option, as shown in the following figure.
7. Then click on the live photo you want to set as "dynamic wallpaper".
8. Finally, click the "Settings" button in the lower right corner to switch to the "Set as Screen Lock" option.