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Scott Goldman uses his mobile phone to call friends and business contacts all over the world, from Britain to Australia. But the Southern California-based consultant doesn't pay a dime in international tolls to his mobile phone carrier, AT&T, the biggest in the U.S. Instead, Goldman places the international portion of the calls -- roughly 100 minutes a month -- through a service called "Gorilla Mobile" that relies on Internet-based technology to route wireless calls virtually toll-free. Goldman, a user of Apple's iPhone, estimates that he saves hundreds of dollars a year.
WiFi will become the bane of the telcos before to long,it is already possible to make Voip/Sip calls to anywhere with nothing more than a WiFi phone, no telco account no sim, nada ! While this technology is not quite perfect yet it is more than usable,and in time will become more that that. The only question is how will the telcos respond,but I suspect they will have some trouble getting the WiFi genie back into the bottle.
