I can't get you tube to work and siri knows whenever I am in motion has well,  We used a tr7 to bypass the video and I got that to work with video's on my ipod classic but the head unit will not support any applications really I use an app called plex which is basically a server that has all my movies on it from home it worked fine on my old 3300.  I have the app mode cord and no matter what i do I still can't get you tube to work I tried going in through car web browser but Opera does not support you tube either.  I just want to be able to stream movies from plex,  what's even weirder is that I get audio but no video I can see it playing on my phone but not on the screen.

I can't get you tube to work and siri knows whenever I am in motion has well,  We used a tr7 to bypass the video and I got that to work with video's on my ipod classic but the head unit will not support any applications really I use an app called plex which is basically a server that has all my movies on it from home it worked fine on my old 3300.  I have the app mode cord and no matter what i do I still can't get you tube to work I tried going in through car web browser but Opera does not support you tube either.  I just want to be able to stream movies from plex,  what's even weirder is that I get audio but no video I can see it playing on my phone but not on the screen.

What Model of iPhone are you using?    If you're using an iPhone 5 you'll need the Lighting to Digital AV adapter and then hook an HDMI cable to the adapter as well as a lightning cable from the adapter to USB1 on the unit.   

It's a 4s I got it to work I posted about it but it was/is a pain in the ass I just used a is77 i simple and put it to the av in back of the head unit,  Plus I wasn't using video's on the phone I was streaming them through "plex" which is an app that obviously the 4600 doesn't support.