have brought me the radion as my purse with a slimmer profile. Installation in my Skoda Octavia RS (1u) was pretty easy! you need a 2 DIN slot, solder with a little and went fachkentnnis the installation quick and easy, the radion has a great sound and great adjustment facility. on the iphone app fuinktionalität I can not say anything because I have no iPhone. everything works fine (presets, EQ settings, and USB and play back DVD)