I had bought a TomTom 510 from a seller from here and I got it and couldn't wait to use it well the navigation worked flawlesly but when I got it home and at night I wanted to pair it up with my cell phone or smart phone guess what?? It don't work at all couldn't make any calls couldn't even get a data link up nothing bule tooth works it hooked up after like 5 trys and then it asked me to do the data thing well it got up to 50% and then boom I had to enter all the info I don't know about you but I don't have all that stuff except for a few stuff.Anyway I called Verizon and I was hoping that they could help me and to figure it out well the person came back on the line and said we at Verizon don't support TomTom gps and I should either call the maker of my phone "palm treo 755p"and ask if they can help me well I was very upset that I wasted my hard earn cash only to find out that my Cell phone company don't work with TomTom.So to all you people with Verizon don't buy it unless you know some one who  can get it up and running for you other then that you can't use it too full capacity and it's a waste of money when you think you can do all that stuff and you can't only the Navigation will work for you,other cell company it might work for you and it might not so beware of it.Good luck