The radio itself is excellent. Great sound and good connectivity. I run on the radio a reversing camera WAECO, via Bluetooth multiple iOS devices and also use the audio input for the gain of the TV sound.
The user interface is fine. Of course, it remains in comparison with modern iOS or Android devices back for miles, but you have to also say that they are fair to compare with other current moniceiver rather than with smartphones or tablets. Here again it cuts very well. The operation runs quickly and easily. I also have found no large latencies in the iPhone coupling as apparently occur in other devices, if one can believe the reviews.
The only downer is the advertised JVC mirroring the iPhone displays (App-Link). That's just nonsense. Here, only the analog video signal of the iPhone is output on the display. To that extent would any 20 year old tube TV an app-Link function. This only works for iPhones up. 4S, any changes have no analog video signal more on the plug. And even the iPhone 4S does not work anymore App Link with iOS 7, because here the analog video function is no longer supported.