CIO Today, 27 April 2006
"This kind of service will probably not be available to American consumers until the first half of 2007," said Leif-Olof Wallin, an analyst at Gartner, "when there will be more cell phones with dual-mode [capabilities]."
You've gotten rid of the wire that connects your phone to the world. Perhaps you're also paying a flat monthly fee for unlimited VoIP calls from your home or office. Now, if a move by Vonage UK becomes popular, you'll be able to make unlimited calls from your mobile phone as well.