Brand model: iPhone 12.

System version: ios 15. 1.

Software version: Tik Tok version 18.2.0.

1. Open the Tik Tok application.

2. Click "I" in the lower right corner.

3. Click the three bar buttons in the upper right corner.

4. Enter "Maker Service Center" and click "All Categories".

5. Click "Buy with Goods" and apply for opening.