my dad has one integrated into his XC70 and then one for the phone....
know he had hassle getting it cloned at the time but i can find out if you like gerry!!!!
Are you talking about 2 different numbers on the same phone? If so it can be done, one bill pay and one pay as you go. Not an easy thing to set up so phone companies arent too willing to do it
Phil (scoobymaniac) has a dual sim Nokia. It has two answer and disconnect buttons, it can run both simcards at the same time. I'm sure he'll be online soon and can confirm the model number