Some web safe fonts are not available on Android devices such as Arial, Times New Roman and Courier New. In this case, the fonts are replaced with identical Google Fonts that do work. Without replacing these fonts with google fonts, your android device would substitute them for something else and your text will not appear correctly.
|Web Safe Font
||Is Replaced With
|Times New Roman
This only applies to Android devices, iOS, Macs and PC's will use the web safe font.