I tried a cable i bought off of eBay a few weeks back-
The usb charges the iphone - Via USB
The jack allows audio output - Via AUX
BUT - when i plug both of these in it shows as media not recognised. Actually as soon as the USB is plugged in the message is displayed
Is it possible to have a usb device plugged in and a jack into the aux at the same time? Currently, usb takes priority over aux and only one shows when i press media on H/Unit. I have an 11plate FR 170 DSG if it is could be the head unit/ CUP software/firmware? I haven't researched this but might make an interesting project to devise a way of switching between the two(USB/AUX) while keeping the 'combined' option (and possibly rigging a mic up with that

)....just a thought though after all i am pretty sure its going to be my cable that’s non compatible
The cable I’d bought was an eBay job but said it was iphone 4 compatible so i assumed all cables were the same?? Can anyone confirm if there are different pin out configurations for the cables and if there is a specific SEAT/VAG configuration? Or even point me to a cable that’s been tried & tested - i see the BMW one works but are there any others rather than a £30-£40 factory jobby??
One more question..... Is it possible to use the phone hands free with this cable - as in, does the microphone (from the phone) take sound input and audio output from the speakers?