Introduction: the eSIM and its acronyms that sound like jargon
If you've already tried an eSIM or are considering purchasing one from ILoveEsim, you've probably come across acronyms that seem straight out of a technical manual: EID, ICCID, SM‑DP+, APN and the ever-present data roaming. This article breaks down each of them, explains why they are important, and offers practical tips so you don't get lost in the jumble of data when planning your next adventure.
1. EID: the eSIM identity number
The EID (Embedded Identity Document) is the unique serial number assigned to the eSIM itself, not to the subscription. Think of it as the ID of the chip embedded in your device. Each eSIM has its own factory-engraved EID, and that number never changes, even if you download multiple profiles from different operators.
- Where do you see it? In the mobile settings, usually under “About phone” → “SIM status”. On some Android devices it appears as “eSIM Identifier”.
- What is it for? Operators use it to register the eSIM in their database, validate that the device is authorized and avoid duplicates.
- Pro tip: When contacting ILoveEsim support, have your EID ready; speeds up activation and troubleshooting.
2. ICCID: the number of the
3. SM‑DP+: the “administrator” of the eSIM
The SM-DP+ (Subscription Manager Data Preparation) is the entity that prepares and delivers your profile data to the eSIM. In simple terms, it acts as the “loader” that writes the carrier information (ICCID, encryption keys, APN, etc.) to the chip.
There are two types of SM-DP: local (in the operator itself) and remote (in the cloud). ILoveEsim uses remote SM-DP+, allowing you to activate your plan instantly, without having to visit a store.
- What does it mean for the user? Activation is done through a QR code or a link that the app generates. You don't need to download additional software.
- Security: The process is end-to-end encrypted; Profile information never passes through an unauthorized third party.
- Trick: If activation fails, check that your device has the latest firmware update; SM‑DP+ often requires specific versions.
4. APN: the internet access point
The APN (Access Point Name) is the address that your mobile uses to connect to the operator's data network. Each operator defines one or more APNs depending on the type of service (data, MMS, roaming, etc.).
On an eSIM, the APN is set automatically when you install the profile, but sometimes you need to set it manually, especially when
5. Data roaming: use your eSIM outside the home network
Data roaming allows your eSIM to connect to foreign operator networks when you leave the original operator's coverage area. There are two main modalities:
- Active roaming: The plan includes data abroad at no additional cost or with a predefined rate. Ideal for digital nomads who frequently cross borders.
- Passive roaming (or “signal only”): The device can receive calls and SMS, but not data, unless you purchase a local package.
When purchasing a plan with ILoveEsim, check the coverage table to find out in which countries active roaming is included and what data consumption is allowed.
Comparative table of key terms
| Term | What identifies | Where is it located? | Main function |
|---|---|---|---|
| EID | eSIM chip (hardware) | Settings > About phone | Uniquely identify the device |
| ICCID | Subscription profile | ILoveEsim App > Plan Details | Manage recharges, blocks and consumption |
| SM‑DP+ |