First of all you are to make sure that your device is compatible with eSim. Please, take a look at the relevant list of the compatible devices via the link:
List of eSIM-Compatible Phones & Devices in 2025 - eSIM Plus
If your device supports eSim, you may proceed to purchasing a data plan.
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Tap on the "+" button at the bottom of the page;
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Choose "Mobile data";
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Choose between the type, country, data volume and price options;
- Select the convenient payment option from the available ones and make a purchase.
After the data plan is purchased you are to activate it on the device. Please, proceed to the article "How can I activate an eSIM on my smartphone?" You will find the detailed instructions there.