I can also confirm my iPhone 4S works perfectly (without office) on the media docking station. There is no real difference other than speed from the iPhone4. Covers, BMW App also work without a hitch.
BMW X3 (F25) xDrive20d M Sport . . Space Grey . . 368M . . Oyster Leather . . Fine line Wave trim . . PRO Multimedia Package . . Visibility package . . . Lumbar Support seats . . folding mirrors . . DAB radio . . business speakers . . split rear seats . . . Reversing Camera with Top View . . . Variable Damper Control . . . Auto . . . Heated Front Seats . . . Mobile App