I bought an iPhone 4S off Craigslist in the US. The kid selling it seemed very genuine. He said he got it as a replacent (he gave me the sales receipt which said "Replacement GSM iphone 4S $0.00) from the Apple store because his other one was faulty and was selling this iPhone 4S brand new. He claimed that because the iPhone hadn't been activated yet that I could activate it with any sim card I wanted because Apple ship the 4S unlocked and the phone is only locked to the carrier that you originally activate the phone with. I brought the phone straight back to the UK and have tried to activate it on the "Three" network but it says cannot activate iPhone, please contact a compatible carrier for a compatible sim card. Is there any way of unlocking this phone besides gevey?