A vehicle may display a user interface of an application based on command information received from a primary-connected device, and send the command information to a secondary-connected device providing an auxiliary user interface. The vehicle may also forward a command message received based on user input to the auxiliary user interface to the application of the primary-connected device. The vehicle may also access paired device data to confirm that the secondary-connected device is authorized to command the application; and forward the user input to the primary-connected device if the secondary-connected device is authorized to command the application.