It’s like every cell phone has some way of checking your firmware and user information. Nokia has it, Ericsson has it etc. So, does the iPhone have a way of checking this out? Yes it does. With just a few keystrokes you can get in to this secret application and check yours. It’s used by iPhone technicians in order to determine what could be wrong with your iPhone if something stops working properly.
I would like to point out a simple warning though. Don’t mess around with your settings as it will most likely create a service failure that is not covered by warranty at all. Even if this application is somewhat “boring” it’s, as the video says, great to know that it’s there and that you can act as if you know just a little bit more about the iPhone than everyone else (that haven’t watched this video yet, lol).