ofono FCC unlocking =================== If you are using a mobile device with integrated WWAN module, a manual configuration step may be needed after installing or upgrading ofono, otherwise the module might NOT be useable. Starting with release 2.16-4, Debian's ofono comes with a helper script that allows one to automize the (so called) FCC unlocking step required before a WWAN module becomes actually usable. You can enable auto-FCC-unlocking AT YOUR OWN RISK by creating symlinks in /etc/ofono/fcc-unlock.d: sudo ln -sft /etc/ofono/fcc-unlock.d /usr/share/ofono/fcc-unlock.available.d/* The helper script can be found at /usr/sbin/ofono-fcc-unlock. Some configuration paramters are at /etc/default/ofono. The ofono-fcc-unlock script is executed at system boot via the oneshot-systemd-service ofono-fcc-unlock.service.