If you want to try out and see how different Android sensors work you can download and install the APK of GyroDroid. This application takes care of checking each and every single one of them so that you can find out if they're working correctly or not.
An application to test Android device sensors
It's a tool built with the Unity 3D graphic engine. It provides access to the sensors used in different augmented reality apps, games, photography and video applications, etc. It also allows us to check stats about them.
Check if your Android is working OK.
This app allows you to test the following sensors: