I've been searching like literally all day on this too.. (slow day at work).
The caveat is seems with the appradio is that only certain apps are supported , google maps not being one of them.
The mirrorlink sounds promising, but with that you have to make sure your phone is turned sideways. And the screen on and plugged in to another 100 dollars worth of adaptors not sold with any headunit. And even then the charging that the headunit provides is not enough to keep up with running navigation.
oh and if you want to stream bluetooth audio like shoutcast radio or something, nope not while mirrorlink is on..
I really want to be wrong about these things i've read, so if someone knows from experience that i'm way off please comment.
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