Frequently Asked Questions

An eSIM is a digital SIM that lets a compatible device use a mobile plan without inserting a physical card. Corelinx provides travel data plans with installation instructions. Before buying, check your exact device variant, carrier-unlock status, destination coverage and when the selected plan starts.

Unlike a physical SIM card, an eSIM is built directly into your device. You can switch carriers or plans without swapping cards, and manage everything digitally through a QR code or app.

Compatibility depends on the exact model, country variant and carrier lock, not just the device brand or age. Check the manufacturer specifications and the Corelinx compatibility checker before buying. A phone, tablet or smartwatch that supports some eSIM services may not support your chosen travel plan.

Yes, your phone must be carrier-unlocked to use an eSIM from a different carrier. Contact your current carrier to unlock your device if needed.

On a compatible Dual SIM device, you can keep your home SIM and use a travel eSIM for mobile data. Choose the travel eSIM as the data line and check the data-switching settings. Calls, texts or roaming on your home SIM may still incur charges from your home carrier.

Connect to stable Wi-Fi or another reliable internet connection. Follow the instructions supplied with your Corelinx order to add the eSIM using its QR code or manual details, if provided. Menu names vary by device. Check the activation rules before installing, especially if you are buying ahead of travel.

Installation and the start of a plan are different steps. The activation trigger and validity period depend on the selected package; do not assume every plan starts only on arrival. Read the package and order instructions before installing or enabling the eSIM, and ask Corelinx support if the trigger is unclear.

Transfer and reinstallation depend on the plan and device. Do not delete an installed travel eSIM or assume its QR code will work on another phone. Contact Corelinx support with your order details before changing devices; a replacement is subject to the package rules.

Your device settings can show how much mobile data it has used, but that counter may not equal the remaining package balance. Check the usage information available for your order, or contact Corelinx support. Availability and refresh timing depend on the plan.

Top-up is available only for supported eSIMs and eligible offers. Check the options for your existing order or contact Corelinx support before purchasing more data. A separate new plan may require a new eSIM installation; do not assume all purchases add data to your existing profile.

This depends on your plan. Data-only plans don't include calls/SMS. Check your plan details—many travel eSIMs are data-only.

Use the payment options shown at checkout for your order. Available methods can vary, so check the final amount, currency and payment instructions before paying. If your preferred method is not offered or a payment remains pending, contact Corelinx support with the order reference.

Refund requests are assessed under the Corelinx Refund Policy; an unused or unactivated eSIM is not automatically refundable. Read the policy for eligibility and exclusions, then contact support with your order ID and a description of the issue. Do not delete the eSIM while the issue is being investigated.

Keep your order confirmation and payment receipt as proof of purchase. If you need an invoice or cannot find your purchase documents, contact Corelinx support with your order reference. Do not share your installation QR code in public when requesting help.

Confirm that the plan covers your location, has remaining validity and data, and is selected for mobile data. Follow its instructions for roaming, APN and network selection, then try airplane mode or restart the device. Do not delete the eSIM or repeatedly scan its QR code. If it still fails, contact Corelinx support with the error message.

Check the installation message for your order. If you cannot find the QR code, contact Corelinx support with the order reference. Reuse and replacement depend on the package: do not delete an installed eSIM or assume a saved QR code can be installed again.

Slow speeds can result from network congestion, low signal, or reaching a fair-use threshold. Try toggling mobile data off and on, or check for network outages in your area.