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How does Dual-SIM? Simply explained

  • Oct 10, 2025
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Meanwhile, more and more Smartphones appear with Dual-SIM. We will show you what exactly is hidden behind the concept of Dual-SIM and a Smartphone in order to work.

Smartphone with Dual-SIM

Dual-SIM: What's the point?

  • Business: you Own a private SIM card and a business SIM card, you don't need two phones. With a Dual-SIM Smartphone, you can switch in the evening or during the lunch break on their private SIM card.
  • Abroad: if you Are often abroad, it may be worth a second SIM card with a cheaper Tariff. To make a call abroad cheaply.
  • Tariffs: Under these circumstances, it may be worth also private to use two tariffs. You have for example a SIM card of Telekom, with the help of which you surf quickly and inexpensively, as well as a SIM-card from Vodafone, with the you to make free calls, you can combine these two rates easy.
In the next practical tip we show you how to WhatsApp on a Dual SIM Smartphone. All Dual Sim mobile phones from Samsung & co. you can find here in the Overview.

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