If a stolen iPhone phones home that it is at particular house that very instant (or recently), is that probable cause to search the house without a warrant? If the officers think that the phone is likely to stop phoning home imminently, seems like the answer would be "yes," but these devices are so new I wonder if courts have ruled on it.
Apparently the actual police involved were well aware of what little legal right they had to be in the building. The "permission" they got would not hold up in court and they knew it.