SIM-Swap Fraud: What to Do When Your Mobile Suddenly Loses Signal

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About Course

SIM-swap fraud is when a criminal moves your mobile number onto their own SIM card, so they get your calls, texts and security codes. Learn the warning signs, simple ways to protect your number and the steps to take quickly if it happens.

Tutwoo is an independent learning provider. This course gives general information to help you recognise and avoid scams. It is not legal or financial advice.

© 2026 Tutwoo UK Limited. This course was created in-house by Tutwoo and is our original work. It is for your own learning only: please do not copy, share, record or resell it.

What Will You Learn?

  • Understand what a SIM card is and how SIM-swap fraud works
  • Spot the warning signs, such as a sudden loss of signal
  • Add extra protection to your mobile account
  • Know who to call, and in what order, if your number is taken

Course Content

Course Lessons

  • What SIM-swap fraud is
  • Warning signs and how to protect your number
  • What to do if it happens

Sources & Further Reading
The official guidance this course is based on.

Final Assessment

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