1.Introduction to eSIM
eSIM (Embedded SIM) is a type of SIM embedded directly into the device instead of using a physical SIM card as before. Rather than inserting a SIM card into the device, eSIM is integrated into the motherboard of smartphones, smartwatches, tablets, or IoT (Internet of Things) devices. This technology was developed to replace physical SIM cards, offering more convenience and flexibility to users.
2. How eSIM works
eSIM operates through a compact chip pre-installed in mobile devices, allowing users to download carrier profiles via the internet without needing to insert a traditional SIM card.
3. Differences between eSIM and physical SIM
| Criteria | eSIM | Physical SIM card |
|---|---|---|
| Form | Integrated into the device, no need for removal. | The physical SIM card needs to be inserted into the SIM slot. |
| Size | Much smaller, just an electronic chip on the circuit board. | Available in various sizes such as nano SIM, micro SIM, and standard SIM. |
| Convenience | Easily switch carriers without changing hardware. | Requires removing or replacing the physical SIM to switch carriers. |
| Usability | Supports multiple carrier profiles on the same device. | Each physical SIM can only work with one carrier at a time. |
| Durability | Not easily damaged or lost due to removal or insertion. | Easily lost, damaged, or broken if not handled properly. |
