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Google Is Silently Linking Your Phone Number Across All Signed-In Accounts
Google has made Android's phone-number verification opt-out, automatically verifying and associating a device's phone number with every Google account signed in on that phone, including secondary and work accounts. Android Authority reports: As spotted in a recent Reddit thread, users report receiving confirmation emails out of the blue from "noreply-phone-verification@google.com" stating that their phone number has been verified. The feature, known in Google settings as "Phone number verification," links your active phone number across all Google accounts signed in on the same phone, including secondary profiles, work accounts, and throwaway handles.
Google's support documentation has long noted that it periodically re-verifies your device's phone number to keep communication and recovery features up to date. However, this support page was updated sometime between August and October 2025 to add this rather aggressive behavior of turning on phone number verification by default, as well as adding all phone numbers to all Google accounts signed in on the device. To disable automatic phone number verification on Android, open your phone's Settings app, tap Google, and select the All Services tab. Under Privacy & Security, find Phone number verification and turn off Verify phone numbers automatically.
"[T]urning off the phone number verification toggle only prevents future linking," notes the report. "If Google has already attached your number across secondary accounts, you will need to open your Google Account Personal Info page, head to Contact info > Phone, and manually remove the number from each profile where it doesn't belong."
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