Jailbreaking a locked iPhone 4s with iOS 6 I received an iPhone 4S as a gift, branded by Orange UK. It runs iOS 6 (6.0.1(10A523)). 

I didn't unlock it yet; I'm using it without a SIM and I'm enjoying the apps, but I want to jailbreak it.

What should I do know? I want to use it locked, but is there a jailbreak?
As of January 2013, there is no jailbreak for iOS 6. The reason is that iOS 6 introduced new security mechanisms and fixed the exploits that made the jailbreak possible on iOS 5.

You will have to wait.

Recent articles (December 2012):


Pod2g breaks silence on iOS 6 untethered jailbreak » Phone Reviews
Hacker: jailbreaking iOS 6 hard, 6.1 may prove impossible | iPodNN


Other good and curated jailbreaking news can be had at:


http://www.reddit.com/r/jailbreak (especially this thread on 6.x jailbreaking)
https://twitter.com/planetbeing
https://twitter.com/chpwn