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Why should you trust WonderSim?

Stay connected wherever you travel!

  • The ideal package for you

    Flexible data packages that fit your budget for the duration you need.

  • Maximum freedom

    Enjoy global connectivity in over 200+ countries without paying too much.

  • Easy installation

    Installed, connected, and ready to use in just a few steps.

  • Keep your phone number

    With WonderSIM, you benefit from low-cost data access while your home SIM card remains active.

  • No more roaming charges

    Before traveling, activate a low-cost data plan for your vacation destination and avoid expensive roaming charges.

  • Immediate provision

    With WonderSIM, you receive your eSIM immediately after purchase.

Is my smartphone eSIM compatible?

If your device is compatible with eSIM, it will appear in the list.

    Find quick answers to frequently asked questions.

    Frequently asked questions

    • What is an eSIM?

      An eSIM is a digital SIM card that is built directly into your device. You don't need a physical SIM card and can simply install your plan directly on your phone.

    • How do I install the eSIM?

      After purchase, you will receive instructions by email. In most cases, you simply scan a QR code or follow the steps in the email—and you're connected.

    • Is my device compatible with WonderSim's eSIM?

      Almost all newer iPhones, Samsungs, Pixels, and many other devices are compatible.

    • Can I keep my normal SIM card while using WonderSIM?

      Yes, you can keep your normal SIM card. With the eSIM, you simply use a second digital mobile phone profile – ideal for travelling

    • How long is my purchase valid?

      Pre-downloaded eSIM data plans in the form of QR codes are valid for 6 months from the date of purchase.

    • What happens when my data allowance is used up?

      You will receive an email notification when your data allowance is almost used up or your tariff is about to expire. You can then simply extend your package or purchase a new one.

    “Two minds, one vision: The founding of WonderSIM”

    WonderSIM was founded in Eupen—in the heart of Tchamba Telecom's offices—by two curious and complementary minds:

    Sébastien Semaille, CEO and founder of Tchamba, and Grégory Glineur, a recognized expert in the telecommunications industry in Belgium and Europe, who is passionate about innovation.

    Innovation instead of limitation: The philosophy behind WonderSIM

    Both have been active in the world of telecommunications for many years and share a common vision: to respond to new consumer needs and behaviors. Given the restrictions imposed by major providers in the field of international mobile connectivity (roaming), they decided to take a different path—a freer, more agile path where technology goes hand in hand with simplicity and accessibility.

    A project with attitude: transparent, local, independent

    WonderSIM is the result of this aspiration: a local, transparent alternative for today's travelers—connected, mobile, and discerning.

    There is no large corporation behind WonderSIM, no empty promises. Just two passionate people, an honest project... and the will to do things differently.

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