Secret code which allows you to break into iPhone 4
We all like messing with our mates phones when they've gone to the bar or bog, updating their Twitter or Facebook status with something wholly inappropriate. And if they've got an iPhone 4, then it doesn't matter if they leave their phone locked because there's a flaw in the security which allows you to bypass their security code and lock screen.
As you can see in the video below, all you need to do is to tap the 'Emergency call' button, then enter three pound signs, hit the green call button and immediately press the lock button... and that's it. You're in.
There's been complaints from security experts that the handset has feeble security and this will no doubt worry handset owners. A similar security flaw was discovered an older version of the iPhone, which Apple acknowledged and issued a software update patching the issue. As yet, there's no word on what they're doing about this one.