First, you need to have a supported aftermarket head unit. Install WebLink for Kenwood or WebLink for JVC on your smartphone, depending on which head unit you have. Plug your phone into the appropriate USB port on your head unit. Select WebLink your head unit, then tap the NextRadio icon on your head unit's screen. If you have trouble getting your phone connected, contact either JVC or Kenwood technical support.
To get the full NextRadio experience, including the Live Guide, Genre Guide and album art, Location Services need to be enabled on your smartphone.