Hi,
I am in the UK, so things might be different - but probably not. I had an iPODS adapter put in my car ('09 spec) - the original version, installed in the compartment between the front seats had just been discontinued - and I also found it does not charge my wife's i-Phone but it does charge (and work with) my i-POD touch (and also my old mini).
Yes, the fault is Apple, not VW. However, I have to say that the functionality and information available is extremely limited (it comes with "track 1 .. et seq... but nothing else, and takes over control of the iPOD, so you cannot yank it out and change settings, albumn etc. without disconnecting.
But it is not bad, I suppose, but not worth the money.
Hope thishelps
Chip