I have a factory fitted Nokia 6090 in my W220. The SIM card is fitted into the handset. Each time I get in the car I have to enter my PIN number. Can I configure the phone so that it doesn't ask for the PIN each time? According to the user manual the Nokia 6090 comes with a radio unit, and if I fit the SIM into the radio unit it won't ask for the PIN each time. Anyone know where the radio unit is located? I've looked high and low but to no avail!