I want to be able to touch an icon and have it call a number. It would also be nice if it didn't like interrupt or kill the running app. Is this even possible on the official iPhone SDK? I've scoured all possible docs and even looked at the session topics at WWDC, and I see no mention of how to integrate your apps with making phone calls. I know it can be done with a tag in Safari, but not sure how that would work since iPhone can only run one app at a time (Safari being one) meaning I would have to kill my app, open Safari, then make the call, but somehow retain the state of my app. And of course, somehow finding a way to make the transition smooth.