What It Means
This can describe single SIM, dual SIM, hybrid trays, or a mix of physical SIM and eSIM support.
It matters for people who use separate personal and work numbers or travel frequently.
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.