This was not the Panic Mode I was looking for.
I was hoping like hellwig that this was some sort of special dialling code for anyone being attacked/mugged/robbed who could mash the button while handing over their phone to cause it to lock up and autodial the emergency services.
But i guess having a useful feature like that would cause less phones to be stolen and therefore reduce profits so would never be implemented.
Biting the hand that feeds IT
