I mentioned yesterday that there were rumors flying that AT&T could be ready to allow VoIP over its 3G network with apps like Google Voice and Skype. Previously VoIP apps on the iPhone were only working over Wi-Fi connections. AT&T officially informed Apple and the FCC yesterday that it would allow 3G VoIP service.

“iPhone is an innovative device that dramatically changed the game in wireless when it was introduced just two years ago,” said Ralph de la Vega, president and CEO, AT&T Mobility & Consumer Markets. “Today’s decision was made after evaluating our customers’ expectations and use of the device compared to dozens of others we offer.”

The scary part to me is the thought of the 3G coverage AT&T offers getting worse by an increased amount of VoIP traffic. Perhaps that won’t be an issue though; most people don’t use VoIP at all.