I have sprint BT Phones Models Samsung SPH A920 and Samsung SPH A900Blade hooked to my TomTom 910. Syncs with both phones fine just when I try to call a POI it(TomTom 910) dials a + first then the number 1 then area code then the phone number. That always makes a busy signal. Is there anyway to remove that + thur the setting on the TomTom? Also I cannot get TT910 to take either address book from either phone. Help if you can.