... and systemctl says?
Did you look in /usr/lib/modprobe.d/ ?
Ehmm... it's the circle of life.
I'll bet you 500 internets that this is nothing to do with Arch. You should probably ask wherever users of Firefox OS and/or your phone gather.Have you tried it with any other host OS?
There is one more (kinda remote) possibility: if you can build those modules on their own i.e. outside the kernel tree, that would be a whole lot faster.
Did you upgrade your kernel and not reboot?
?... never seen that, and I've been using it for years.Anyway, not relevant here, just thought I'd mention it.
The wiki is your friend:https://wiki.archlinux.org/index.php/AU … do_I_do.3F
It's a wiki, you can make the change yourself.