I\'m doing some research on the feasibility of an iPhone application, and can\'t find any indication in Apple\'s documentation that an iPhone app can read the call history o
Unfortunately you can't access the call history. The only User Data you have API access to is the address book. You can also access photos/pictures but only by starting an iPhone-controlled dialog that allows the user to choose a single image.
It's a bit sucky, hopefully this will be expanded in future versions.