a very quick google search returns a lot of results of "iphone packet sniffer" so i'd suggest that if it was possible for some developer or carrier to get some malicious software like this installed onto an iPhone, someone would have already found it and there would have been a lot more shouting and accusing going on by the Androiders.

As I understand it, the only way to get this level of reporting on an iPhone is to either be Apple, or to have jailbroken your phone and then installed some dodgy piece of homebrew.