We all should post on HTC's Facebook page to get the ball rolling on fixing this. It worked for getting the bootloader unlocked. I've been posted several times a week since the beginning of this issue.
Works fine in my Ford F150...Maybe upgrade your radio?i know other phones sync but it may be nice to get a new head unit(giggity)
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What year is your Ford? Does it phone book sync or just phone audio sync?
Never had a problem with my 2010 Fusion and Sync.
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