I wanted to design an app that would send SMS messages to your contacts from within the app in the background. However, I cannot seem to find any tutorials on it and the Apple Docs arent anyhelp. I have also read somewhere that it is outright impossible.

But if so, how does the app, iDistress manage to do it? It send text messages from preselected contacts with a custom message : http://www.buzapp.com/idistress.html

Check out the screencast.

Thanks.