I instrumented oxide’s WebPreferences constructor to print out the default font families returned by the Qt platform plugin, and the result is the same on desktop and device:
standard font family: "DejaVu Serif"
serif font family: "DejaVu Serif"
sans-serif font family: "DejaVu Sans"
fixed font family: "DejaVu Sans Mono"
I instrumented oxide’s WebPreferences constructor to print out the default font families returned by the Qt platform plugin, and the result is the same on desktop and device:
standard font family: "DejaVu Serif"
serif font family: "DejaVu Serif"
sans-serif font family: "DejaVu Sans"
fixed font family: "DejaVu Sans Mono"
So the problem lies elsewhere.