What if I had a phone that works over WiFi? ... What if there was city-wide WiFi coverage? Or WiFi coverage equivalent to cell phone networks (covering cities and major highways)? [Then] my WiFi phone would work everywhere.Since then, there have been some developments around this idea.
Google just launched Google Talk, a VoIP application. Google is rumored to be thinking about a nationwide free WiFi network. Combined these two, add a WiFi phone to the mix, and am I about to get free mobile calling nationwide?
First, there are new WiFi phones appearing on the market. These phones sound easy to use and come preloaded with the necessary VoIP software.
Second, the NYT did a report last month on VoIP using WiFi and the potential threat to cellular networks.
Third, Katie Fehrenbacher at Gigom tested using the Google WiFi in Mountain View for making calls.
It is not clear whether VoIP using WiFi will be built out by Google, eBay/Skype, or a startup like Fon, but it is looking very likely to get built by someone.