It's a pretty good feeling to know everything about your iOS device – important information about it, everything it's doing, and even everything that's on it. Some of this information can be found in Apple's Settings application, but a new jailbreak tweak called Inform Me
by iOS developer sharedRoutine goes very in-depth and gives you more information than Apple wants to give you.
The tweak, once installed, adds a preferences pane to the Settings application:
In this preferences pane, which we're not going to show you because of all the sensitive information contained within, you'll find information such as:
MLB Serial Number
Inverse Device ID
User Device Name