i have a Alpine headunit model number IDA-x303.
When connecting the iphone via usb its showing the songs being played on the head unit and even the time/name of track on the screen but theres no sound.
i updated the iphone and it worked but now has gone back to the first problem. Any ideas of what it could be.
Matloob
Have you checked the volume on the iPhone itself, that may control the volume of the output ?
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