Google Is Silently Linking Your Phone Number Across All Signed-In Accounts

Google has quietly started linking Android users' phone numbers across all signed-in accounts, including secondary and work profiles. This "Phone number verification" feature, accessible through Google settings, automatically verifies a device's phone number with every Google account logged in on that phone. The change was brought to light in a Reddit thread, where users reported receiving unannounced confirmation emails from noreply-phone-verification@google.com, stating their phone number had been verified.

Google's support documentation has acknowledged periodic phone number re-verification to maintain communication and recovery features. However, the recent update adds aggressive default behavior, attaching phone numbers to all Google accounts signed in on a device. To disable this feature on Android, users must navigate to their phone's Settings, tap Google, select the All Services tab, find Phone number verification under Privacy & Security, and turn off the automatic verification toggle.

Turning off the toggle only prevents future linking, according to the report. For those whose numbers have already been attached to secondary accounts, they must manually remove the number from each profile where it doesn't belong through their Google Account Personal Info page, under Contact info Phone.