iPhone 3GS factory unlocked iPhones are available in US via Buy.com As you know, in America, you can buy the iPhone without a contract, but stays on the obligation to use a sim AT & T. From today, the site Buy.com is offering the iPhone 3GS 16 and 32 GB Factory Unlocked to use with any other carrier. The price are iPhone 3GS 32GB $ 999 – € 694 and iPhone 3GS from 16GB $ 849 – € 590. In Hong Kong Apple Online Store sells factory unlocked iPhone GS for much better price. The iPhone 3GS 16 Gbyte costs in HK$ 5,388 (696 US$ or 499 Euro) The iPhone 3GS 32Gbyte costs HK$ 6,388 (812 US$ or 582 Euro). In Italy TIM Telecom store, the factory unlocked iPhone 3GS 16GB costs 619 Euro and the 32GB version costs 719 euro. In few countries, the iPhones are sold factory unlocked and without a plan. For complete list of country and carrier who offers factory unlocked iPhone check here iPhone 3G 3GS Factory Unlocked Confirmed List
iPhone 3GS purchased at the Apple Online Store can be activated with any wireless carrier (GSM). Simply insert the SIM from your current phone into iPhone 3G or iPhone 3GS and connect to iTunes 8.2 to complete activation.