Well, using Occam's Razor (and discarding the supernatural and the unlikely, like mobile phone trojans), there is really only a few ways this could have happened. Either the console was not properly locked, or the console locking is buggy and gives way after a long time pressing it. The first is more likely, or you'd have 99999999999 on the phone.
Mobiles phoning 999 is a big problem in the UK, you'll know that. It's the number that gets pressed the most when a phone is placed in a bag or pocket, because of where it is. I thought that new phones came with extra protection for accidental pressing of the 9 digit.
It may seem unlikely that any phone could spontaneously phone 999. But according to the emergency services exchanges, thousands do. Maybe because it's 666 upside-down?
