What is Dual SIM?

Dual SIM allows users to use two phone numbers at the same time. For example, you can use one number for business and another number for personal. You can have one number linked to an eSIM and one number linked to a physical SIM. eSIM-only devices, like iPhone 14, 14 Plus, 14 Pro, and 14 Pro Max allow for two eSIMs on the same device.