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Google Fi's 'Number Lock' adds protection against SIM swaps - here's how to enable it

The new security feature lets you lock your mobile phone number so that scammers can't transfer it to another phone or carrier.

The least secure method is standard SMS authentication in which a text message is sent to your mobile phone with a code that you must confirm. In one series of cases, scammers offered money to former employees at T-Mobile and Verizon to help them pull off SIM swaps. Based on new FCC rules issued last November, carriers must offer secure methods to authenticate a user before redirecting their phone number to a new device or provider.

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