Hey Buddy, I have on star and very seldom use it, my keys were locked in the truck a couple of times it came in real handy for that. I had a glow plug go bad and when the light came on I pressed the button and they ran a diagnostic on it told me what was wrong. I like the idea that if I have an accident it would call for me since my cell phone normally lays on the console there is no telling where it will be. The minutes are way too high but I do keep a few on there just in case I need them. Also if someone steals my truck I am more likely to get it back. Good luck it is a high price to pay for peace of mind.