A new securityflaw has been discovered in iOS: it bypasses the password that protects iOS an iPhone running 4.1.
So, the hacker can access personal data stored in the mobile.
To achieve this, it must simply enter # # # on the keypad, instead of an emergency number, then just press all the buttons lock and appeal. This causes the release of the phone application that provides access to contacts, messaging and call history.
Apparently, this flaw is exploitable from version 4.2 Beta 3 IOS. Which suggests that Apple got wind of the vulnerability and that it has corrected
Source: Video of a Brazilian hacker who gave a demonstration of the exploit: