Find answers to the most frequently asked questions about eSIM cards, installation, and using our services.
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Basic information about eSIM technology
eSIM (embedded SIM) is a built-in SIM card that is permanently installed in the device. Unlike a traditional SIM card, eSIM does not require physical replacement - the carrier profile can be downloaded and activated digitally.
This allows you to instantly activate a data plan anywhere in the world without having to find a local SIM card store.
No, eSIM works independently from your regular SIM card. Most modern smartphones support Dual SIM, which means you can:
Most devices allow storing multiple eSIM profiles (up to 10+), but only one can be active at a time. You can switch between profiles in your phone settings.
For example, you can have separate eSIM profiles for different countries and activate the appropriate one before traveling.
Check if your device supports eSIM
iPhone: Go to Settings > Cellular. If you see "Add eSIM Plan" or "Add Data Plan" option, your phone supports eSIM.
Android: Go to Settings > Network & Internet > SIM cards. If you see an option to add eSIM, your phone is compatible.
You can also check your phone's IMEI number (*#06#) - devices supporting eSIM also display EID.
The following iPhone models support eSIM:
Note: iPhones purchased in mainland China do not support eSIM (except iPhone 13 mini, 12 mini and SE).
Yes, your phone must be carrier unlocked to use eSIM from a carrier other than the one you bought the phone from.
If you bought the phone on installments or with a contract, it may be locked to that carrier. Contact your carrier to check the status and request unlocking.
Some tablets and smartwatches with built-in LTE modem support eSIM:
However, our eSIMs are optimized mainly for smartphones. For other devices, contact us to confirm compatibility.
How to install and use eSIM
We recommend installing eSIM before departure, when you still have access to stable Wi-Fi. Installation requires an internet connection.
You can install eSIM even a few days before travel - it won't start counting until you activate data roaming in the destination country.
To install eSIM you need:
After arriving in the destination country:
If you have problems, restart your phone or toggle airplane mode.
Yes! Dual SIM feature allows using both cards simultaneously:
This way you keep your phone number and can receive calls and messages while using cheap eSIM data.
How to activate and use eSIM after installation
You can install eSIM before travel (at home with Wi-Fi), but activation will happen automatically when:
From that moment, the package validity period starts counting (e.g., 7 days, 30 days).
On iPhone:
On Android:
On iPhone:
On Android:
Remember to leave your main SIM card for calls and SMS!
You don't need to turn off Wi-Fi permanently, but if you want to check if eSIM works:
When Wi-Fi is available, your phone will automatically use it, saving mobile data.
Help with eSIM problems
If eSIM is installed but internet doesn't work, check:
If the problem persists, restart your phone or toggle airplane mode.
If you have trouble scanning the QR code:
This error may occur for several reasons:
If the problem persists, contact our support.
If the eSIM profile disappeared:
Important: Once deleted eSIM cannot be reinstalled with the same QR code. Contact us to get a new code.
Checking usage and topping up packages
You can check data usage in several ways:
Yes! Most of our packages support top-ups:
Top-up will be added to existing profile - no need to install new eSIM!
When you use all data in the package:
Note: We don't charge any additional fees - after using the package, internet simply stops working.
Package validity period (e.g., 7, 15, 30 days) starts counting from first connection to the network in the destination country.
Example: If you buy a 7-day package and install it at home, the validity period will only start when you arrive and your phone connects to the local network.
You can check expiration date in the Customer Panel.
Explanation of eSIM-related terms
eSIM (embedded SIM) is a built-in chip in the device that functions as a traditional SIM card. The carrier profile is downloaded digitally, without need for a physical card.
Data roaming is a service that allows you to use another carrier's cellular network, usually abroad. You must turn on data roaming for eSIM to connect to the local network in the destination country.
Dual SIM is a device feature that allows simultaneous use of two SIM cards (or SIM card + eSIM). You can choose which line to use for calls, SMS, and data.
APN (Access Point Name) is the access point to the mobile network. In most cases, APN is configured automatically. If you have connection problems, you may need to manually configure APN - details can be found in the eSIM email.
Carrier lock means the phone is locked to a specific carrier and cannot use SIM card or eSIM from another carrier. To use BlueSky eSIM eSIM, your phone must be unlocked.
Information about payments and orders
We accept the following payment methods:
You will receive the QR code immediately after payment is processed - usually within seconds. Email with QR code and instructions will be sent to the address provided during purchase.
If you haven't received the email within 5 minutes, check SPAM folder or contact us.
Yes, we issue VAT invoices. To receive an invoice, contact us at hello@blueskyesim.com providing order number and invoice details.
We offer full refund if:
After installing eSIM, refund is not possible because QR code can only be used once. If you have technical problems, contact us - we'll help solve the problem or offer an alternative solution.
How to contact our team
You can contact us in several ways:
We try to respond as quickly as possible:
For urgent matters, we recommend live chat or WhatsApp.
Our support team communicates in:
You can write in your language - we'll respond in the same language.
If you have a technical problem with eSIM:
The more information you provide, the faster we can help!
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