What It Means
This is the main onboard storage you get out of the box. Some of it is used by the operating system, so available space is always lower than the headline figure.
It matters because it affects how much media and how many large apps you can keep locally.
Where You Will See It
This term can appear on full specification tables, product comparison pages, and the inline help icons placed next to technical labels.
Use the glossary when you want a quick explanation before comparing two devices feature by feature.