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Old 08-12-2019, 02:05 PM
scr4 is offline
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Join Date: Aug 1999
Location: Alabama
Posts: 16,080
An AUX port is input only, isn't it? So when you make a call from your car, are you talking into the phone while sound is coming out of the speakers?

I'm wondering if this causes the phone to work in half-duplex mode (i.e. not transmitting and receiving at the same time), and when the other party is in the car, the constant road noise is preventing your phone from ever transmitting.