A security hole in iPhone 4 software allows you to make a call after dialing a few pound signs and timing a few others as found by a MacForums member.

When you iPhone is locked with a passcode tap Emergency Call, then enter a non-emergency number such as ###. Next tap the call button and immediately hit the lock button. It should open up the Phone app where you can see all your contacts, call any number, etc.

Here’s a dude in Brazil showing it off.

More fun with the number pad from comments:

Open the number pad and type \”77\” for example and press dial. The screen dims, a loader comes up and after a while a message says \”Unknown Application\” with an option to dismiss the message.

Try it out!

via @mmoeed

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