[HotM3x]

Has anyone ever retrofited Nav or Voice control in an F25? I just bought a 2014 x3 28i and while I don't mind the missing NAV part, my '09 M3 has voice control which is handy for making hands free calls (cant believe it's not standard on an X3, but I digress). I saw the button on the wheel and just assumed it was active, but I guess it's not. Would like to know if anyone has tried to retrofit NAV or Voice control (or both) from Bimmertech, or just bought a separate Nav unit and display and installed it. Is there extra wiring involved or is it just plug and play (with coding, of course). I was thinking about just adding an android multimedia touchscreen to replace the current one, but unsure if the android auto app would mute the radio automatically when I ask to use it. Anyone have any experience with the android display?