Font issue on Android

Hi,

I have found some weird behavior (don’t know if it’s correct or wrong though)

For a website I am working on, all basic fonts (h1,h2, … P) are (let’s say a some-serif font.)
When I use text editor module, and want to have a portion of text to (let’s say the some-sans) from style tab. Every device looks fine, (as intended, all text is showing serif and selected texts are sans) but only on Android Chrome (I am not sure it will be applied to all Android devices though, I have tested only a couple of Android devices) , only showing basic serif font.

To accomplish the different font, I applied span style=… tag for the texts I want to change.
Now on Android as well, all showing mixed font selection.

This is a right behavior or am I missing something?

Any insight will be appreciated. Thanks!