http://www.macnn.com/articles/09/05/05/att.mywireless.mobile.app/
AT&T intros myWireless Mobile app for iPhone
updated 04:20 pm EDT, Tue May 5, 2009
ATT myWireless Mobile app
AT&T has released myWireless Mobile, an application for the iPhone that allows customers to manage family and personal accounts directly from the handset interface. The service is designed as an extension of myWireless, with options to view monthly bills and make payments. The bill is available as a summarized preview or a PDF file. Users can also view voice and data usage, including text messages, or change add-on features.
myWireless Mobile is available from the App Store for free.
Fresh-Faced Recruit
Joined: Jan 2006
Not bad!
I think AT&T did good by releasing this app. It doesn't do everything, but it really is a LOT better than their web site, which is clearly optimized for something like IE 4.0 and Netscape 3.01.
I think they could have done this app on their web site, but undoubtably the internal politics behind changes to that system are likely severe.
So, if you can't get the web site guys to make changes for the better, build an app!