It works through your cell service through bluetooth.The entune service is free,but It won't work without your cellular data signal. You need to first download the "Toyota Entune" app from the app store, then register with your e-mail and password. Once you do that, make sure your logged in to the Toyota Entune app on your phone, now when you hit the apps button in your truck,it will automatically connect,but you will use cellular data,just so you know. It's useless without a data signal. I have it, it comes in handy sometimes.