Technical FAQ

eSIM stands for embedded SIM. It is a programmable SIM card permanently integrated into your device's circuit board. Unlike removable SIM cards, eSIM profiles are downloaded digitally via QR code or app, governed by the GSMA SGP.22 specification.

The EID (eUICC Identifier) is a 32-digit unique identifier for your device's eSIM chip — analogous to a physical SIM's ICCID. It is used by providers to bind eSIM profiles to your specific device, preventing profile cloning. Finding your EID confirms eSIM hardware support.

SM-DP+ (Subscription Manager Data Preparation Plus) is the server that prepares and delivers eSIM profiles. When you scan a QR code, your device connects to the SM-DP+ server to download the profile. This requires internet connectivity. Once installed, the profile can be activated without internet.

No. The GSMA SGP.22 specification explicitly prohibits profile cloning. Each profile is cryptographically bound to a specific EID during provisioning. The secure element's hardware prevents extraction of profile credentials.

On iPhone: Settings → General → About → look for EID. On Android: Settings → About Phone → look for EID, or dial *#06#. The presence of a 32-digit EID confirms eSIM hardware. No EID means no eSIM support regardless of software.

Samsung ships some regional variants with eSIM hardware disabled at the firmware level, particularly in South Korea, some Asian markets, and certain carrier-branded variants. The hardware may be present but locked. Contact your carrier to check if eSIM can be enabled.

Yes. Carrier-locked devices may be restricted to installing eSIM profiles from the locking carrier only. Unlocking removes this restriction. On iOS, carrier unlocking is reflected in Settings → General → About → Carrier Lock showing "No SIM restrictions."

RLAH means EU-regulated carriers cannot charge roaming surcharges within EU member states. For eSIM users with EU-based plans, this means your plan works across all 27 EU countries at domestic rates. Non-EU providers may not be subject to RLAH — always check plan terms.

Your device continuously scans for available networks. When crossing a border, it detects networks in the new country and authenticates using the roaming agreements in your eSIM profile. This typically takes 30–120 seconds. Setting network selection to Automatic ensures the best available network is chosen.

Yes, if your device and plan support 5G. 5G SA (Standalone) networks in Europe are expanding rapidly. Germany, Netherlands, and Sweden have the most advanced 5G deployments. Ensure your device's network mode is set to 5G/LTE in Settings for optimal performance.

Most eSIM plans configure APN settings automatically via the profile. If data isn't working, check your provider's documentation for manual APN settings. Common fields: APN name, username (often blank), password (often blank), and MCC/MNC codes for the network.

1. Verify eSIM is enabled and set as data SIM. 2. Enable Data Roaming for the eSIM slot. 3. Toggle Airplane Mode on/off. 4. Go to Settings → Cellular → Network Selection → Manual, and select an available network. 5. Restart device. 6. Check if plan validity has started.

Common causes: unstable Wi-Fi, device carrier-locked, QR code already used. Try: switch to a different Wi-Fi network, use mobile data for download, use the manual activation code from your confirmation email, or contact your provider to reset the QR code.

Yes. Factory reset erases all eSIM profiles. On iOS, you can backup and restore eSIM profiles if iCloud backup is enabled. On Android, profiles are typically deleted permanently. Check your provider's reinstallation policy before performing a factory reset.