Troubleshooting steps:
1. Make sure that you are using genuine Apple CarPlay USB to lightning cable. Cheap cables can create connectivity issue. Do not use long cables, the optimal length of the USB cable is up to 6ft, including all extensions.
2. If you are using USB extension cable, try to use VLine system without USB extension cable, connecting directly to the VLine and iPhone. If the USB extension cable has failure, it will create connectivity problem.
1. Make sure that you are using genuine Apple CarPlay USB to lightning cable. Cheap cables can create connectivity issue. Do not use long cables, the optimal length of the USB cable is up to 6ft, including all extensions.
2. If you are using USB extension cable, try to use VLine system without USB extension cable, connecting directly to the VLine and iPhone. If the USB extension cable has failure, it will create connectivity problem.