1. Introduction to eSIM
eSIM (Embedded SIM) is a type of SIM embedded directly into a device instead of using a physical SIM card as before. Rather than inserting a SIM card into a device, eSIM is integrated directly into the motherboard of phones, smartwatches, tablets, or IoT (Internet of Things) devices. This technology was developed to replace physical SIM cards, offering greater convenience and flexibility for users.
2. How eSIM Works
eSIM operates through a compact chip pre-installed in mobile devices, allowing users to download carrier profiles over the internet without needing to insert a traditional SIM card.
3. Differences Between eSIM and Physical SIM
| Criteria | eSIM | Physical SIM |
|---|---|---|
| Form Factor | Built into the device, no need for removal. | Traditional SIM card that needs to be inserted into a SIM slot. |
| Size | Much smaller, just an electronic chip on the motherboard. | Available in various sizes like nano SIM, micro SIM, and standard SIM. |
| Convenience | Allows quick carrier switching without hardware changes. | Requires physical SIM removal or replacement to switch carriers. |
| Usage Capability | Supports multiple carrier profiles on the same device. | Each physical SIM works with only one carrier at a time. |
| Durability | Not prone to damage or loss from removal. | Can easily be lost, broken, or damaged. |
4. Advantages of eSIM
- Saves Device Space: Without the need for a SIM slot, manufacturers can utilize this space to increase battery capacity or add other features.
- No Risk of Loss or Damage: Since it lacks removable hardware, eSIM is less likely to be damaged or lost.
- Manages Multiple SIMs on One Device: A single device can store multiple carrier profiles, making it convenient for those who frequently travel between countries.
