That's not true. AT&T has always limited iPhone VoIP applications to WiFi to cripple their usefulness. They just announced today that they were extending VoIP

That's not true. AT&T has always limited iPhone VoIP applications to WiFi to cripple their usefulness. They just announced today that they were extending VoIP apps to 3G, most likely due to pressure from the FCC. Also, you can't replace the native dialer or any core functions on the iPhone. Google Voice implemented its own dialing interface and was rejected for duplicating the built-in dialing and voicemail functions. http://finance.yahoo.com/news/ATT-Extends-VoIP-to-3G-bw-767580967.html?x=0 http://finance.yahoo.com/news/ATT-Extends-VoIP-to-3G-bw-7675... http://en.wikipedia.org/wiki/Google_voice#Rejection_from_iPhone_App_Store http://en.wikipedia.org/wiki/Google_voice#Rejection_from_iPh...