I got the problem of communication failure with sim 11 days ago. Here are what the commands say for one of the two sim cards I tried: # dbus-send --system --print-reply --dest=com.nokia.phone.SIM /c om/nokia/phone/SIM Phone.Sim.get_sim_status method return sender=:1.19 -> dest=:1.427 reply_serial=2 uint32 0 int32 0 # dbus-send --system --print-reply --dest=com.nokia.phone.net /com/nokia/phone/net Phone.Net.get_registration_status method return sender=:1.19 -> dest=:1.426 reply_serial=2 byte 0 uint16 0 uint32 0 uint32 0 uint32 0 byte 0 byte 0 int32 2