Last updated: August 2026

1. Introduction

These Terms and Conditions apply to purchases and use of services provided by Big Data Roaming, a service operated by Wifi.se Sverige AB, company registration number 556421-1216, with registered office at Artillerigatan 6, 114 51 Stockholm, Sweden.

In these Terms, “Big Data Roaming”, “we”, “us” and “our” refer to Wifi.se Sverige AB. “You” and “User” refer to the person purchasing or using our services.

By purchasing an eSIM or Data Plan from Big Data Roaming, you agree to these Terms and Conditions.

2. Our Service

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

Our eSIMs can be used in the countries and destinations specified on the relevant product or coverage page at the time of purchase.

Available plans, data allowances, validity periods and coverage may vary and will be clearly stated before purchase.

3. Current Data Plan

Unless otherwise stated on the product page, our standard Big Data Roaming eSIM includes:

• 300 GB mobile data
• 30 days validity
• No daily data limit
• Coverage across supported destinations in Europe and selected destinations beyond Europe

The exact plan purchased and its conditions are shown during checkout and in your order confirmation.

4. Device Compatibility

Your device must be:

• eSIM compatible;
• carrier/network unlocked;
• compatible with the mobile networks available at your destination; and
• correctly configured for mobile data and roaming where required.

It is your responsibility to check that your device supports eSIM before purchasing.

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

5. Purchase and Payment

All Big Data Roaming eSIM plans are prepaid.

You must pay the full price shown at checkout before your eSIM is delivered.

Prices include applicable taxes unless otherwise stated during checkout.

Payments may be processed by an authorised third-party payment provider.

6. eSIM Delivery

Your eSIM is a digital product.

After successful payment, your eSIM information and QR code will be delivered electronically, normally by email.

You are responsible for providing a valid and correct email address when placing your order.

No physical SIM card will be shipped unless explicitly stated on the product page.

7. Validity Period

Your eSIM Data Plan validity starts from the date of purchase.

Unless otherwise stated, the Data Plan is valid for 30 days from the purchase date.

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

When the validity period expires:

• the Data Plan will automatically expire;
• any unused data will be forfeited; and
• unused data cannot be transferred to another plan or validity period.

8. Installation and Activation

You will receive instructions explaining how to install your eSIM.

A stable internet connection may be required to download and install the eSIM.

You should not delete the eSIM from your device until your Data Plan has expired or all data has been used.

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

If you delete your eSIM, install it on the wrong device or experience installation problems, contact us at:

info@bigdataroaming.com

We will assist where technically possible but cannot guarantee that an eSIM can always be reissued.

9. Data-Only Service

Big Data Roaming eSIM plans are data-only, unless otherwise specifically stated.

The eSIM does not normally include:

• a mobile telephone number;
• traditional voice calls; or
• SMS messaging.

If your device supports Dual SIM, you may normally keep your regular SIM active for calls and text messages while using Big Data Roaming for mobile data.

Any charges made by your regular mobile operator remain your responsibility.

10. Data Usage

Your Data Plan includes the amount of data specified when you make your purchase.

A plan advertised as having no daily data limit does not divide the total data allowance into a fixed daily allowance.

However, mobile network operators may apply reasonable network management, fair-use or security measures where necessary to protect network performance and other users.

11. Coverage and Network Availability

Big Data Roaming uses third-party mobile network providers to provide connectivity.

Coverage, signal strength, connection speed and available network technology may vary depending on:

• your location;
• local network availability;
• network congestion;
• your device;
• buildings and physical obstructions;
• geographical conditions;
• maintenance;
• weather;
• radio interference; and
• circumstances outside our reasonable control.

We cannot guarantee uninterrupted connectivity, a specific speed, or access to a specific network technology such as 4G or 5G in every location.

The list of supported destinations available on our website should be checked before travelling.

12. User Responsibilities

You agree to use the Service in accordance with these Terms and all applicable laws.

You must not use the Service:

• for fraudulent, criminal or illegal activities;
• in a way that damages or interferes with a telecommunications network;
• to infringe intellectual property rights;
• to interfere with services provided to other users; or
• in any way prohibited by applicable law.

We reserve the right to suspend or terminate the Service if it is used unlawfully or in material breach of these Terms.

13. Cancellation and Right of Withdrawal

Consumers may have statutory cancellation or withdrawal rights under applicable Swedish and EU consumer legislation.

Because an eSIM is a digitally delivered service that may be supplied immediately after purchase, your right of withdrawal may be affected once digital delivery or performance of the service has begun.

Where required by law, you may be asked during checkout to consent to immediate delivery of your eSIM and acknowledge the consequences for your statutory right of withdrawal.

Nothing in these Terms limits any mandatory consumer rights available to you under applicable law.

14. Refunds

If your eSIM does not work as expected, please contact:

info@bigdataroaming.com

We will investigate the issue and provide reasonable technical assistance.

A refund may be available where:

• the eSIM was not delivered correctly;
• the purchased Service cannot be provided because of a fault attributable to Big Data Roaming;
• the eSIM or Data Plan materially fails to conform to what was purchased; or
• a refund is required under applicable consumer law.

Refunds will normally not be provided solely because:

• the eSIM was purchased earlier than intended and part of the validity period has expired;
• you did not use all included data;
• you travelled to a destination that is not included in the purchased coverage;
• your device is not eSIM compatible;
• your device is carrier locked;
• incorrect device settings prevent access to the Service; or
• the eSIM was deleted or incorrectly installed by the User.

Mandatory consumer rights always take precedence over these conditions.

15. Intellectual Property

All content associated with Big Data Roaming, including trademarks, logos, website content, graphics, text, software, photographs, videos and designs, is owned by or licensed to Wifi.se Sverige AB unless otherwise stated.

You may not reproduce, modify, distribute, publish or commercially exploit our protected content without prior written permission.

16. Personal Data

Wifi.se Sverige AB processes personal data where necessary to:

• process your order;
• deliver your eSIM;
• provide customer support;
• process payments;
• prevent fraud and misuse;
• administer our services; and
• comply with applicable legal obligations.

Further information about how we collect and process personal information is available in our Privacy Policy and Cookie Policy.

17. Limitation of Liability

To the extent permitted by applicable law, Big Data Roaming is not responsible for loss, interruption or reduced performance caused by circumstances outside our reasonable control, including failures, restrictions or outages affecting third-party telecommunications networks.

We are not responsible for problems caused by incompatible or carrier-locked devices, incorrect device settings, lack of local network coverage or improper installation of the eSIM.

Nothing in these Terms excludes or limits liability where such limitation or exclusion is prohibited by Swedish or applicable EU law.

Nothing in these Terms affects your mandatory statutory consumer rights.

18. Changes to the Service

We may update our Data Plans, coverage, prices, technical requirements or services from time to time.

Changes may be necessary because of:

• network-provider changes;
• roaming agreements;
• technical developments;
• regulatory requirements; or
• changes to our services.

The conditions displayed when you complete your purchase apply to that purchase unless otherwise required by law.

19. Changes to These Terms

We may update these Terms and Conditions when necessary.

The latest version will always be published on our website.

Changes will not remove or restrict mandatory consumer rights applicable to purchases already made.

20. Governing Law

These Terms and Conditions are governed by Swedish law, subject to any mandatory consumer-protection rights that apply in your country of residence.

We encourage you to contact us first if you have a complaint or dispute so that we have the opportunity to resolve the matter.

Nothing in these Terms restricts any mandatory rights available to consumers under Swedish or applicable EU legislation.

21. 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