Just found out 3 of them claim that they can unlock iOS6 on iPhone4s, but price are very. Which one is more reliable? I'm in Canada and my phone is locked by Fido.
http://rebelsimcard.com/ios-6.0-modem-3.0.04-iphone-gsm-cdma-4s-unlock-and-activation-rebel-pro-v2-micro-simcard-gsm-and-cdma-models-en.html#.UHhfHuFxGNY
http://www.gevey.com/gevey-ultra-s-for-gsm-iphone-4s/
http://www.beijingiphonerepair.com/hack/x-sim-beats-gevey-sim-to-unlock-iphone-4s-on-ios-6-with-baseband-3-0-04/
http://rebelsimcard.com/ios-6.0-modem-3.0.04-iphone-gsm-cdma-4s-unlock-and-activation-rebel-pro-v2-micro-simcard-gsm-and-cdma-models-en.html#.UHhfHuFxGNY
http://www.gevey.com/gevey-ultra-s-for-gsm-iphone-4s/
http://www.beijingiphonerepair.com/hack/x-sim-beats-gevey-sim-to-unlock-iphone-4s-on-ios-6-with-baseband-3-0-04/