Rian Johnson: Apple Bans Bad Guys from Using iPhones in Movies
gizmodo.com
gizmodo.com
Edit: I don't think they can enforce this if someone goes and buys an iphone. If they provide the hardware or pay for product placement then they can.
If this is true I bet that it was a condition of the giveaway relationship Apple has with studios.
Maybe Apple sues them for something like slander / liable (bad guys use X product) or misuse of Copyright?
Though I don't agree the above should be ethically possible; they're the ones that put that logo on everything. Similarly I don't think buildings or statues in public view should be copyright. They've been placed on display in public.