I attempted to pair my iPhone with my Garmin Nuvi 660 and while both devices "see" each other I am stymied because of the passkey requirement. The Nuvi requires that you input a numerical passkey, which is not working on the iPhone's keypad because of the way in which the iPhone automatically puts in the "1" and then the area code in parentheses (123) and phone number. I've tried every possible way to get this to work. Has anyone been able to do it? ETA: OK, problem solved! Ahem....user error!! I went out and tried it again and THIS time the special keypad came up so that I could input the passkey. Bingo! I think probably before I was confusing the phone and the Nuvi by repeatedly trying over and over. Now it is up and running just fine!!