The About menu item mainly just exists to provide information about your device and the version of Android running on it.
In this section:
Allows checking for updates to the Android operating system, including new versions of Android.
Provides access to help guides or built-in help tips for your device.
Provides information about the current cellular network connection.
Provides information about this particular phone or tablet.
Provides information about the operating system software installed on the device, such as the Android version.