The Fade setting (how loud the rear / front) can only be very rough set, so you either back or front only hears what), this should be much finer can adjust.
While listening to music from a USB stick, the radio automatically switches to traffic news - this can not be switched off. In addition, the volume of USB to radio is so different that you get some hearing if the device transport news suddenly jumps to USB by half (!) Back. (Then again on the news, up to 5 times (!)).
The source switch here does not change - the play of USB immediately jumps back to the radio traffic news (Bulls *** !!)
A Bluetooth connect neither worked with my iPhone 5, even with the iPhone 4S my wife. (Reset of the phone and the radio did not help), a forum advised me the latest firmware update draufzuspielen- done. Located in the update process crashed off the radio and remains since the black, can not be turned on.
To connect my iPhone with a cable to the USB port has not worked. It was not recognized (and no, I have no gejailbreaktes iPhone).
Maybe you have with your device better luck. From the application it provides, from okay.
ADDENDUM:
Amazon immediately delivered me sand replacement, installed the device, Bluetooth works fine. However, the micro to handsfree is garbage, processed totally cheap, totally silent, is quasi the phone unsuitable.
What I have noticed: I can not change a radio station while Traffic Announcements. The device "locks" and let me just switch when the news are done ... totally stupid ...