AT&T customers can now pay their bill, view all voice and data usage and browse / manage bolt-on features directly from their iPhone with ease thanks to the new myWireless mobile app.

So, if you want to stay on top of your usage (especially if you have a family plan or travel overseas), the myWireless app is now available as a free download in the App Store. [iTunes via iPhonebuzz via Slashgear]