The present invention is related to a method for testing a navigation receiver comprised in a communication device, whereby the communication device further comprises a device for mobile wireless communication. The method comprises the steps of: connecting the communication device to a test equipment device, sending navigation assistance data information comprising test configuration data from the test equipment device via the device for mobile wireless communication to the navigation receiver over an assistance data communication port in order to initiate a test procedure, sending test navigation ranging signals from the test equipment device to the navigation receiver, processing the test navigation ranging signals in the navigation receiver, sending a message concerning the test procedure in response from the navigation receiver to the device for wireless mobile communication, feeding back the message to the test equipment device.