LOS ANGELES ( CNN ) -- A group of anonymous software developers said they will soon start selling a program that will allow iPhone owners to use the hugely popular device on cell phone systems around the world and not just with AT & T . Apple 's iPhone is yet to go on sale outside the U.S. Apple 's iPhone , released in the United States two months ago , was engineered to operate for the first two years only on the AT & T system through an exclusive arrangement between Apple and AT & T . It has not yet been sold outside of the U.S. Los Angeles software consultant Brett Schulte , who is not affiliated with the developers , demonstrated the software for CNN Friday evening . An iPhone that had the new software appeared to work on the T-Mobile system just seconds after Schulte replaced the AT & T SIM card with a T-Mobile SIM card . `` It 's completely software hacked , '' Schulte said . `` There 's no case opening required . It 's not required to do any kind of disassembly . '' It took Schulte about two minutes to unlock the iPhone . The developers would not give CNN their last names , saying `` We do n't want to be hounded . '' The said they would start selling the software , which they have n't yet priced , as soon as their online payment and customer service systems are ready . They 're also waiting for more information from their lawyers . Apple spokeswoman Jennifer Bowcock told CNN her company has no comment . AT & T spokesman Mark Siegel said he could n't speculate on the legality of unlocking the phone , but he added , `` When you sign up , you 're signing a two-year contract . You 're obligated to pay the bill . '' `` When people buy the iPhone it 's clear from our materials it 's designed to operate exclusively on AT & T , '' Siegel said . Schulte , however , said it is possible to buy an iPhone without being contractually obligated to AT & T . The developers recently created a Web site -- iPhoneSIMfree.com -- but there is very little information on it and no direct way for anyone to purchase the software . Internet records showed they bought the domain name less than two weeks ago . Two members of the group , who identified themselves only as `` John '' and `` Liu , '' told CNN in a phone interview that a core group of six people on three continents worked to unlock the iPhone as a hobby . They said they are fans of Apple products who thought the iPhone should be made accessible to people who can not use AT & T . `` I 'm not in America and I ca n't use it , '' said Liu , who would not reveal the country in which he lives . `` It 's not fair . '' Asked if he thought modifying the iPhone was legal , he said `` That 's a very good question . I truly believe it is . '' John and Liu said they have not been contacted by either Apple or AT & T , but said that could change the moment their software goes on sale . Earlier this month , a teenager figured out a way to unlock the iPhone , but his method required disassembly of the unit . E-mail to a friend .
Software developed enabling Apple 's iPhone to be used on any phone network . Device can currently only be used on AT & T network in the U.S . Anonymous developers plan to start selling program soon .