Not sure if you mean the audio or something more elaborate. If you’re asking how to connect phone to audio, this device for less than $40 works well. TUNAI Firefly LDAC Bluetooth Receiver: High Resolution Wireless Audio Bluetooth 5.0 Adapter with Audiophile USB DAC 3.5mm AUX for Car/Home Stereo Hi Res Music Streaming; Auto On, No Charging Needed
