fso-deviced works if you install older version of it (snapshots.debian.org). But trying to suspend phone through it (direct dbus call) doesn't work. So still no luck.
There is no UI for calling/messaging available in Debian right now (phoneui-apps package is broken, always was for me). As I probably already wrote somewhere...
I should have some free time with the end of this month, but I remain pessimistic. I'm not at the level to fix these things myself, only wait and maybe bug those who can.