Android Users Should Manually Delete Phone Numbers to Stop Google From Auto-Linking Accounts

Google has changed how Android devices handle phone number verification, automatically linking your mobile number to every Google account signed in on that phone. According to TechRadar, this new default behavior means that secondary accounts used for work or other purposes may now contain your primary phone number without your explicit permission. Users report receiving unexpected emails confirming these verifications, which has sparked significant privacy concerns among those who wish to keep their digital identities separate.

In plain English

This change affects anyone who uses multiple Google accounts on a single Android device. Previously, phone numbers were not automatically shared across all accounts on the phone. Now, if you add a new account or a new phone number, the system attempts to verify and link that number to all existing accounts. According to Cyber Security News, this applies to accounts added later as well as those already present, creating a unified profile that users did not explicitly construct.

The background

Google updated its support documentation between August and October 2025 to describe this default setting and the resulting account-wide linking, though an exact rollout date remains unclear. The company states that verification supports account sign-in, recovery, emergency services, and communication features. According to Cyber Security News, Google and mobile carriers periodically check that numbers still belong to the user, a process that may incur carrier charges. This behavior is an account setting, not evidence of a security breach.

What changes now

Users must now actively disable this feature if they wish to prevent automatic linking. TechRadar notes that while users can toggle off "Verify phone numbers automatically" in settings, some report the setting reverts back on its own. Disabling the toggle stops future automatic links but does not remove numbers already attached to accounts. To fully unlink a number, users must visit the personal info page for each account and manually delete the phone number from the contact information section.

Key terms explained

Phone number verification confirms that an account holder controls a specific mobile line. This process helps platforms recover accounts if passwords are lost and adds a layer of security during login attempts. For this kind of event, teams usually review which accounts hold sensitive contact data. Check whether automated linking settings are enabled in account management portals. Verify that secondary or test accounts do not retain personal identifiers. Ensure that privacy preferences are reviewed regularly, as default settings often change with software updates.

What to do and how to stay safe: Google

• Open your Android settings, navigate to Google services, and locate the "Phone number verification" option.
• Toggle off the "Verify phone numbers automatically" switch to stop future linking across accounts.
• Visit the personal info page for each signed-in account and manually remove any phone numbers you did not intentionally add.
• Monitor your account activity emails for unexpected verification notices and repeat the removal process if the setting re-enables itself.

General security guidance from the Vector Update newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

Does this mean my phone number is now public on Google?

No, the documentation does not state that the number becomes publicly visible; it is used for verification and account recovery.

Will turning off the setting remove my number from existing accounts?

No, disabling the toggle only stops future automatic linking; you must manually delete the number from each account's personal info.

Is this a sign that my Google account has been hacked?

No, Cyber Security News clarifies that this is a default account setting, not evidence of a security breach or unauthorized access.