Last updated: August 2026

1. About These Purchase Terms

These Purchase Terms apply to all eSIM and mobile data plans purchased from Big Data Roaming, a service operated by Wifi.se Sverige AB.

By placing an order on our website, you agree to these Purchase Terms.

Big Data Roaming
A Wifi.se Sverige AB Company
Company registration number: 556421-1216
Artillerigatan 6
114 51 Stockholm
Sweden

Email: info@bigdataroaming.com

2. Your eSIM Order

Big Data Roaming provides prepaid, data-only eSIM plans for compatible devices.

Once your payment has been successfully completed, your eSIM is created and delivered electronically, normally by email together with the information needed to install it.

No physical SIM card will be sent.

Please make sure that the email address provided when ordering is correct.

3. Important – Your Plan Starts From the Purchase Date

Your Big Data Roaming eSIM plan becomes active from the purchase date.

The standard Big Data Roaming plan is valid for 30 days from the date of purchase, unless otherwise stated on the product page.

We therefore strongly recommend purchasing your eSIM close to your intended travel date.

The validity period continues to run even if you:

• install the eSIM later;

• do not travel immediately;

• do not use the included data; or

• do not use the eSIM at all.

When the validity period expires, any unused data is lost and cannot be carried forward, transferred or exchanged.

4. Check Your Device Before Purchasing

Please check that your device is eSIM compatible before placing your order.

Your phone, tablet, laptop or other device must:

• support eSIM;

• be carrier/network unlocked;

• support the networks available at your destination; and

• allow mobile data and data roaming where required.

A device compatibility guide is available on our website.

Compatibility may vary depending on the exact device model, country of manufacture, mobile operator and software version.

It is the customer’s responsibility to check compatibility before purchasing.

5. Digital Product and Returns

An eSIM is a digital product that is created and delivered electronically after your purchase.

Because your eSIM is issued and the validity period begins from the purchase date, it cannot be returned in the same way as a physical product.

Once the eSIM has been issued and the service has begun, orders are generally non-returnable and non-refundable, subject always to any mandatory consumer rights that apply under Swedish or EU law.

The source terms supplied for the service similarly distinguish cancellation rights according to whether a data plan has already been activated.

6. Refunds

Refunds are normally not provided if:

• your device is not eSIM compatible;

• your device is carrier/network locked;

• you ordered the eSIM earlier than intended;

• part or all of the 30-day validity period has passed;

• you have not used the eSIM;

• you have not used all of the included data;

• you travelled to a destination outside the plan’s coverage;

• your device is incorrectly configured;

• you delete the eSIM after installation; or

• local mobile coverage is weak or unavailable in a specific location.

If there is a confirmed technical problem attributable to Big Data Roaming that prevents us from providing the purchased service, please contact us and we will investigate the issue.

Nothing in these Purchase Terms limits mandatory rights available to consumers under applicable law.

7. Included Data

Your eSIM includes the data allowance displayed on the product page at the time of purchase.

For our standard plan this is currently:

300 GB mobile data
Valid for 30 days
No daily data limit

If your included data is used before the validity period ends, mobile data service may stop unless another available plan is purchased.

Unused data remaining when a plan expires is forfeited. This principle is also reflected in the supplied service terms.

8. Coverage

Your eSIM may only be used in the countries and destinations included in the coverage for your purchased plan.

Please check the eSIM Coverage information on our website before purchasing and before travelling.

Big Data Roaming uses third-party mobile network operators. Coverage, connection speed and network availability may vary depending on location, network congestion, your device, terrain, buildings and other local conditions.

Mobile network availability cannot be guaranteed in every location. The underlying service terms similarly state that mobile data depends on in-country network partners and can be affected by factors such as network usage, terrain and distance from mobile towers.

9. Data-Only eSIM

Unless specifically stated otherwise, Big Data Roaming eSIMs provide mobile data only.

They do not include a traditional mobile telephone number, standard voice calls, SMS or access to emergency calling services through the eSIM.

If your device supports Dual SIM, you may normally keep your regular SIM active for your usual phone number while using Big Data Roaming for mobile data.

Any charges from your regular mobile operator remain your responsibility.

10. Installation

You will receive installation information together with your eSIM.

You will normally need an internet connection to install the eSIM.

Please:

• install the eSIM only on the device you intend to use;

• follow the installation instructions carefully;

• do not delete the eSIM after installation; and

• contact us before deleting or reinstalling an eSIM if you experience a problem.

An eSIM may only be installable once or on a limited number of devices.

We cannot guarantee that an eSIM can be replaced if it has been deleted, transferred incorrectly or installed on the wrong device.

11. Prices and Payment

All Big Data Roaming plans are prepaid.

The price displayed during checkout is the price applicable to your order.

Payment must be completed before your eSIM is issued.

Applicable taxes are included or displayed during checkout as required.

12. Customer Responsibility

Before completing your purchase, please make sure that:

• you have selected the correct Data Plan;

• your destination is included in the coverage;

• your device supports eSIM;

• your device is carrier/network unlocked;

• your email address is correct; and

• you understand that the validity period starts from the purchase date.

13. Technical Problems

If your eSIM does not work correctly, please contact us before deleting it.

We may ask you to check settings such as:

• mobile data;

• data roaming;

• SIM selection;

• APN settings;

• network selection; and

• device configuration.

We will make reasonable efforts to help resolve technical issues.

14. Changes to Plans and Coverage

Available Data Plans, prices, data allowances and coverage may change from time to time.

The product information and conditions displayed when you complete your purchase apply to that order.

15. Applicable Law

These Purchase Terms are governed by Swedish law, subject to any mandatory consumer protection rights that may apply to you.

Nothing in these Purchase Terms excludes or restricts rights that cannot legally be excluded or restricted.

16. Contact

If you have questions regarding an order, your eSIM or these Purchase Terms, please contact:

Big Data Roaming
A Wifi.se Sverige AB Company

Wifi.se Sverige AB
Company registration number: 556421-1216
Artillerigatan 6
114 51 Stockholm
Sweden

Email: info@bigdataroaming.com