This is an app meant for developers or people who are just curious about their Android device. Full source available: https://bitbucket.org/mveroukis/juanita There are so many different devices and it's often not obvious how each device is configured. Android uses configuration qualifiers for it's resources, which means you can use different sets of resources depending on the screen density or orientation. Sometimes it's not obvious what a particular device's screen size or screen pixel density