Tik Tok version for step demonstration: version 22.6.0.
1. After entering the mobile phone Tik Tok, click "I" in the lower right corner, and then click the "three" icon in the upper right corner.
2. After opening, click "Settings" at the bottom.
3. After opening the settings, find and click "Font Size".
3. Select "Big" below, and then click "OK" in the upper right corner.
4. A confirmation box will pop up, and click "Confirm". Tik Tok will automatically restart, and the font will be large when entering the live comment.