I visited a friend the other day and her LO picked up her IPhone, swiped the lock screen to unlock it, swiped the menu a couple of times until she got to a child's game , selected it and started playing it.
It just seemed strange watching such a small child being able to do this. It was quite impressive. It also made me feel a bit inadequate as a parent as my 18 month old wouldn't have a clue how to do it....