Big Bad Toy Store have released details of some up-coming Doctor Who iPhone 4 cases. You can see them below (Click to view larger):
These cases are very expensive though, if you are purchasing them from America then it will cost you $35.99 and if you are in the UK it will cost you £22.67. The are only available from America , it is currently unknown if they will be available on the Forbidden Planet website. Pre-order them here.
Please Note: these are only for iPhone 4's.