Smartphone Integration, What Does it Do?

[Pex5]

I ordered smartphone integration. I was told I'll need a snap in adapter to utilize this feature and that it will boost the signal slightly and charge my iphone. That much I understand, but the part about the music looses me. How is the smartphone integration different than an ipod adapter regarding music?

BTW, Hello everyone. I just joined the board. I visited many times as an E53 owner a few years ago. Its a wonderful site. I'm happy to formally join. I have an 09' 4.8 on order for my wife.