It doesn’t sound like much of an iOS 7 bug — swipe this way, launch such-and-such app, double-tap that button, slip iOS’s surly security bonds — but if you tend to believe the “lock” in Lock Screen ...
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 ...