After “evaluating customers’ expectations and use of the iPhone compared to dozens of others AT&T offers,” the operator has finally taken the steps necessary so that Apple can enable VoIP applications on iPhone to run on AT&T’s wireless network.

Previously, VoIP applications on iPhone were enabled only for Wi-Fi connectivity. At the same time, AT&T has offered a variety of other wireless devices that enable VoIP applications on 3G, 2G and Wi-Fi networks.

In late summer, AT&T said it was taking a fresh look at VoIP capabilities on iPhone for use on AT&T’s 3G network, consistent with its regular review of device features and capabilities to “ensure attractive options for consumers.”

In August Federal Communications Commission started the investigation asking both Apple and AT&T to clarify the reasons of the removal of Google Voice application from the App Store.

Although we didn’t even know if the Google’s app would allow VoIP over AT&T 3G network, the company felt obligated to explain: “AT&T had no role in any decision by Apple to not accept the Google Voice application,” said Jim Cicconi, AT&T senior executive vice president, external and legislative affaire.

And the situation has changed. Dramatically changed. “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.

iPhone users in the U.S. will now be able to use VoIP apps when they’re connected to AT&T’s 3G network.

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