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05.01.2026
Stay Connected in Switzerland (and Beyond) with a Single eSIM: The Smart Alternative to Roaming
Switzerland is a stunning country. With its Alpine peaks, peaceful lakes, cosmopolitan cities like Geneva and Zurich, and world-famous ski..
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25.11.2025
eSIM and Business Travel: Why Reusing It Makes Sense
eSIM technology has transformed how travellers stay connected abroad. An eSIM is not a physical card, but a digital profile stored..
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13.11.2025
✈️ Travelling Abroad? Activate Your eSIM Before You Fly
WonderSIM – Stay Connected, the Smart WayPlanning your next trip? Here’s an important tip for every traveller using a travel..
Why should you trust WonderSim?
Stay connected wherever you travel!
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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.