If you purchased a DAB+ Antenna with your head unit kit , follow the below:
1. Connect DAB+ Antenna to the USB port on the rear of the unit
2. Connect DAB Antenna components together, then attach the sticky antenna section to the windscreen
3. Go to the Play Store on the unit, and download the "DAB-Z" app. Once downloaded, you can use this app to listen to digital radio / DAB stations.