If you use a vivo mobile phone, the font color of the mobile phone system is black by default (the color will be automatically adjusted according to the background color). The initial color of the desktop font is related to the initial wallpaper color of the device. If the wallpaper is dark, the desktop font will display white. If the wallpaper is light, the desktop font will display black.

If you want to change the font color, you can go to I Theme-Recommendation-Font Selection-Search for "Colorful" and download your favorite color (you need to pay).

Note: I theme fonts support trial use. You can try it before you buy it.

The colors of desktop fonts can be downloaded and used (for a fee). Enter I Theme-Features-Top Search Bar-Select Font-Enter "Art" search.

If you have more questions, you can enter vivo official website-My-Online Customer Service-Sliding Bottom-Online Customer Service-Enter Manual Customer Service and enter the consultation.