I have had the rant for a while and then I changed my phone number. My gps was working just fine until about 3 weeks into changing my number. Now it says I have to purchase it even though it is included in my plan. When I try to like the tech told me it says it is registered under my previous number and then when I try again it says invalid purchase. So what do I do now??? We have called tel-nav and they told me sprint has to fix it. Sprint tells me tel-nav has to! I am just geting the run around all the way. I cant even use the gps, and that was the point of the plan that I was on.......so what should I do now?