[breakingcups]

Can I ask what you mean by that? Firefox's core has been used on the mobile phone in multiple applications that function just fine and Firefox's desktop version is perfectly capable of resizing down to mobile phone sizes, even emulating a phone if you want.

[seba_dos1]

There's no mobile version of Firefox that would work on GNU/Linux. There was one, but got ditched when Fennec got rewritten into being a native Android app.