We are becoming less and less dependent on mobile networks. You can get a data signal almost everywhere that you can get a mobile signal and most of us are around WiFi most of the time anyway.
In an update to its iPhone SDK, Apple is now permitting apps to make VoIP calls over 3G wireless networks, an option that was once only available over a WiFi connection. According to a press release ...
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What is VoIP?

VoIP technology uses a broadband internet connection to transmit phone calls. Learn VoIP's features and everything you need to know to implement VoIP.
Making phone calls without incurring traditional phone charges has become increasingly popular, thanks to the rise of free calling apps that utilize Voice over Internet Protocol (VoIP) technology.
The guys at touchmods.net have been busy readying a VoIP app for the iPod touch, and they have just released a video of the first successful call made using their software. Apparently, the app will be ...
Apple has started removing duplicate VoIP apps from the App Store. The purge comes after a report highlighted a shady practice some developers have been using to game App Store search results. Plenty ...
The best phone systems for small businesses use Voice over Internet Protocol (VoIP) technology to turn internet-connected devices into communication hubs. These affordable VoIP solutions offer ...