Possible to unlock iphone 4S on ios 6?

Without gevey sim

I don't think so. Check a mac forum someone probably has the same question.

If its locked to AT&T USA then you can unlock it at: http://www.iphonefort-mobile.com

Yes you can unlock I-phone 4S without Gevey sim card… You can use remote unlock service to unlock your I-phone 4s. Visit the site http://www.prounlocking.com/apple-iphone-4s/rs8wp9/ get remote unlock service at reasonable price and unlock it easily… You need to specify the network, country it's locked now and get remote unlock service and unlock I-phone 4s.

Ios6 is not possible to unlock right now.

Yes, it is possible to unlock iPhone 4s on iOS 6 without gevey Sim.

Absolutely. You can unlock the AT&T iPhone (any generation) permanently (no hardware, no jailbreaking) with some help from these guys: http://gsmunlocklabs.com/unlock-iphone/ and then a new SIM and iTunes. It's a very simple process and permanently unlocks the phone just like a factory unlock.