Restarting ofono, as suggested in https://bugs.launchpad.net/ubuntu/+source/telepathy-ofono/+bug/1379836/comments/11 fixed it for me (at least until the next restart).
Restarting ofono, as suggested in https:/ /bugs.launchpad .net/ubuntu/ +source/ telepathy- ofono/+ bug/1379836/ comments/ 11 fixed it for me (at least until the next restart).