Protect your phone number from SIM swap scams

In a SIM swap, a scammer convinces your mobile carrier to move your phone number to a SIM card they control. Your calls and texts, including sign-in codes, then go to them. The FCC warns about a related scam, port-out fraud, where your number is moved to another carrier.

Warning signs

• Your phone suddenly shows No service or SOS only where it normally works
• A text or email from your carrier about a SIM change or number transfer you didn't ask for

Protect your number

1. Add a PIN or passcode to your mobile account, and turn on number lock or port-out protection if your carrier offers it.
2. Use the Authenticator app for your work sign-ins, rather than text messages, wherever you can.
3. Keep your phone number off public profiles.

Lost service unexpectedly? Call your carrier from another phone straight away. If you use that number for work sign-ins, call us on 707-755-8000 too.