Wi-Fi phones are devices that allow users to make voice calls over a wireless Internet connection instead of using the traditional telephone system or the cellular phone network. Wi-Fi phones have increased in popularity as high-speed Internet access and in-home wireless networks have become more prevalent.

Benefits

Wi-Fi phones allow subscribers to circumvent using cell phone minutes and the traditional land-line telephone service. The devices are small and portable, which allows users within range of their Wi-Fi network to enjoy low-cost, worldwide calls to land lines and cell phones, or free calling to users on the same "voice over Internet protocol" (VoIP) network.

Features

Wi-Fi phones provide all of the popular features found on traditional telephone plans including voicemail, caller ID and call waiting. However, they are also able to send and receive text messages like cellular phones.

Types

Wi-Fi phones can be purchased as standalone devices; they can also be accessed via smartphone and media player applications that allow them to be used on devices like Apple's iPhone and iPod Touch. Additionally, Wi-Fi phones can be plugged directly into a computer's USB port or accessed through computer programs like Yahoo Messenger, Skype and Windows Live Messenger.

Geography

Wi-Fi phones can be used in any wireless hot spot regardless of where the subscriber is located in the world. Their global accessibility drastically reduces or eliminates the cost of domestic and international calling.

Potential

The cost effectiveness of Wi-Fi phones is poised to destroy the price structure of the traditional telecommunications industry. Wi-Fi phones have the potential to change the way we communicate.

Source:

What is a Wi Fi Phone?

Skype iPhone App

Vonage Mobile