I have a Galaxy Note 8 and I cannot use the phone and charge it at the same time. The battery goes down, not up. Waze especially wont allow the phone to charge. I have tried 6 different high end cables, usb a to c and usb c to c. I am going to have my radio shop install some cigarette lighter ports so I can charge my phone. The one cigarette lighter port on the top of the dashboard works but it is in the worst place.