Technical FAQ

For definitive eSIM support verification, navigate to your device's settings. On iOS, access "Settings" > "Cellular" > "Add eSIM". On Android, search for "eSIM" or "Add mobile plan" in network settings. The presence of these options indicates hardware and software readiness. Additionally, consult your device manufacturer's official specifications page or support documentation, referencing the specific model number to confirm eSIM capability, particularly for regional variants.

Yes, a carrier-locked device may prevent eSIM activation or usage with our services. eSIM functionality, similar to physical SIMs, is often subject to the carrier's locking policy. Devices must be carrier-unlocked to ensure full compatibility and interoperability with third-party eSIM profiles, including ours. We recommend contacting your current mobile network operator to ascertain your device's unlock status and initiate the unlocking process if necessary, prior to attempting eSIM installation.

Yes, certain device models manufactured for specific regional markets may omit eSIM hardware, even if the broader product line supports it. For instance, some iPhone variants sold in mainland China or Hong Kong utilize dual physical SIMs instead of eSIM. Always verify the precise model number (e.g., AXXXX) against the manufacturer's official specifications for your specific region of purchase. Relying solely on the device's brand or general model name is insufficient for accurate eSIM compatibility assessment.

Affirmative. eSIM functionality often necessitates a minimum operating system (OS) version for optimal performance and security protocol compliance. Newer eSIM features, such as QR code scanning for profile download or specific activation methods, may be absent or unstable on outdated OS builds. Ensure your device is updated to the latest available stable OS version. Consult your device manufacturer's support documentation for the recommended OS baseline for full eSIM capability and feature set.

Scanning failures often stem from environmental factors or display issues. Ensure sufficient ambient light, minimize screen glare, and maintain a stable distance for camera focus. Verify the QR code is displayed clearly and not distorted. If scanning remains unsuccessful, our platform provides the necessary SM-DP+ address and Activation Code for manual installation, accessible via your CoreESIM account dashboard. Refer to device-specific instructions for manual entry procedures.

We recommend installing your eSIM profile prior to departure, ideally when connected to a stable Wi-Fi network. However, defer activation of the cellular plan, typically by leaving it toggled 'Off' in your device's cellular settings, until you reach your destination. This methodology prevents premature data consumption and ensures immediate network registration upon entry into the covered geographical region. Confirm data roaming is enabled for the eSIM line.

First, confirm the eSIM profile is enabled in your device's cellular settings. Verify that 'Data Roaming' is activated for the eSIM line. Next, check if the Access Point Name (APN) settings match our specifications, if provided (often default). Perform a device restart. If issues persist, manually select a network operator from the available list in your device's network settings, ensuring it is a CoreESIM supported partner in your current location.

Yes, an active internet connection is essential for the initial provisioning and download of the eSIM profile onto your device. This connection facilitates secure communication with the remote provisioning server (SM-DP+). We strongly recommend utilizing a stable Wi-Fi network or an existing cellular data connection to ensure successful and uninterrupted installation of your CoreESIM plan. Without an internet connection, the profile cannot be downloaded to your device.

Optimal data volume estimation depends on anticipated usage patterns. Basic navigation and messaging consume minimal data. Streaming video or frequent video calls significantly increase consumption. Consider local Wi-Fi availability at your destination. We recommend analyzing your typical daily data usage prior to travel and adding a buffer, or opting for a slightly larger plan than initially calculated to mitigate service interruption risks.

Upon expiration of the defined validity period, the data service associated with that specific eSIM profile will cease operation. Your device will no longer transmit or receive data via this profile. To restore service, you must purchase a new data plan. Depending on the plan specifications, a top-up option might be available, otherwise a new eSIM profile installation may be required for continued connectivity.

A local data plan provides cellular data connectivity within a single, specified country, leveraging partnerships with Mobile Network Operators (MNOs) in that specific jurisdiction. A regional data plan, conversely, offers connectivity across a predefined group of countries within a contiguous geographic area. Regional plans are designed for multi-country itineraries, simplifying connectivity management by obviating the need for separate local profiles per nation.