My initial comments was in the context of whether the jack layout had changed between the FP1 and the FP2. Simple functions (audio in/out) should work. Getting the buttons to work turns out to be an issue that is not solely determined by the jack layout. Unfortunately, I don’t have any wisdom on that front to share, other than that this issue seems more general to android phones and that some people report (on other forums) that specific apps for remapping button presses solves the problem.
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