So, iOS 6.1 hasn't been Apple's finest hour. So far it's been plagued with connection issues, battery woes, and now it's sadly insecure, too. You can bypass any lockcode on an iPhone using this straightforward sequence of button presses.
The instructions are pretty simple. First you have to pretend to turn the phone off, then make an aborted emergency call, then a quick bit of off button and cancel pressing. That boots you into the full phone app where you can pretty much call or message anyone you like, or edit phone contacts.