SIM swap
A scam where your phone number is moved to a scammer's SIM so they can intercept your calls and security codes.
How it appears in scam messages
You suddenly lose signal as the number is ported, then attackers use incoming codes to reset your accounts.
Example only - do not act on it
Example only: Your number will be migrated shortly - share the code to confirm the transfer.
Why it matters
Your number is a key to banking and email; once intercepted, codes sent by SMS can unlock your accounts.
Common red flags
- Sudden, unexplained loss of mobile signal
- Account resets you didn't request
- Requests to confirm a 'number transfer'
- Codes arriving you didn't trigger
Safe next steps
- Never share verification or one-time codes; turn on app-based 2FA.
- Secure the account, change the password, and sign out unknown sessions.
- Warn your contacts and report the takeover.
Related scam types
Related scam messages you can check
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- Is this fake KYC update bank message a scam?
- Is this card blocked SMS scam a scam?
- Is this suspicious transaction alert SMS a scam?
- Is this SIM swap verification SMS a scam?
Related scam-type hubs
Related red flags
Emergency guides
Frequently asked questions
How do I prevent a SIM swap?
Set a carrier port-out PIN and move banking and email off SMS codes onto an authenticator app.