I am honestly stuck using IOS6 with AppRadio v.2.3.0. For some reason, AppRadio lost connectivity to the icons (spins out grey and then says app) so I thought Id upgrade to v.2.8.5. The screen is over zoomed and no buttons function. I downgraded back to v.2.3.0 and I had full functionality again minus the icons for the apps (but at least they launch). I complain each year at the Pioneer CES booth about this and they actually agree with me since it is a cat and mouse game trying to keep up with changes from Apple. So when a new phone or OS comes out, they try to make changes for it to work but then it breaks functionality with older phones and their older head units. I think if Pioneer had their own line of smartphones, this wouldnt be as much of an issue but that isnt going to happen so try and find a combo that somewhat works and live with it. Nice concept but impossible to get nailed down it seems. If there were standard protocols implemented from Apple then maybe.
Preroll about AppRadio