Google Phone Number Verification: How to Stop Account Linking

Google phone number verification on Android quietly adds the phone number in your device to every Google account signed in on that phone, including work and secondary accounts. The behavior has been on by default since a Google Play services update in September 2025, but many users are only noticing it now. You can turn it off in your phone’s settings, although that alone does not remove numbers that are already attached.

What Google Phone Number Verification Actually Does

Google’s Android help page on phone number verification spells it out. When you set up an Android device, Google verifies the number or numbers on it and adds them “to all Google Accounts that are signed in on the device.” The rule applies to current and future accounts and numbers, so a Google account you add later picks up every number on the phone, and a new SIM puts its number on every account.

Google and your carrier also try to re-verify the numbers periodically to make sure they are still yours, and Google notes that carrier charges may apply. The setting can only be managed from the phone itself, not from the Google account dashboard on the web.

According to Google, a verified number supports signing in with your phone number, account recovery, emergency location, Find My Device, RCS messaging, video calls and Quick Share. Turning verification on also switches on a separate option called Better sharing on Google for one of the signed-in accounts.

Why Are People Only Noticing It Now?

As Engadget reported, citing findings by Android Authority, Google amended its documentation sometime between August and October 2025 to say verification is on by default, and a Play services changelog dated September 8, 2025 lists number verification running automatically during setup. Many users only found out after unprompted emails from noreply-phone-verification@google.com told them their number had been verified.

The privacy concern is simple. Plenty of people keep a work account, a personal account and sometimes a pseudonymous account on one phone. If you deliberately left your number off a secondary account, automatic verification can tie it back to your real identity without asking. Google says it does not sell personal information, including phone numbers, but the link still gives the company another way to connect accounts you wanted to keep apart.

There is a security angle too. A phone number is a weak point when attackers use SIM swapping to intercept text messages and reset passwords, which is why app-based codes and passkeys are safer than SMS. Phone numbers also get recycled by carriers or handed down within families, so an old link can end up pointing at someone else.

How to Turn Off Automatic Phone Number Verification

The path is roughly the same on Pixel, Samsung Galaxy and other Android phones, though some brands label the Google menu “Google services” or “Google services and preferences”:

1. Open the Settings app on your Android phone.
2. Tap Google, then open the All services tab.
3. Under Privacy & security, tap Phone number verification.
4. Turn off Verify phone numbers automatically.

If you have several Google accounts on the phone, switch the account at the top of the Google settings screen and check the setting for each one. Some users report that the toggle turns itself back on after a while, so it is worth checking again later.

How to Remove a Number Already Linked to Your Google Account

Turning the toggle off only prevents future linking. To clean up existing links, go to myaccount.google.com, open Personal info, then Phone under Contact info, and remove the number from every account that should not have it. Check the profile picture in the corner first so you know which account you are editing.

Think twice before removing the number from your main account. If it is your recovery number, deleting it can make it harder to get back in after a lost password. To switch off Better sharing on Google, open the same Phone page, select your number and turn the option off.

What You Lose if You Turn It Off

As Kaspersky points out, disabling verification means losing RCS chats in Google Messages, which pushes conversations back to plain SMS, and the number can no longer be used for quick account recovery. That trade-off matters more now that RCS is also the route for richer messaging with iPhones.

For most people with a single Google account, leaving verification on is reasonable. If you keep separate identities on one phone, turn it off, clean up the linked numbers and move your two-step verification away from SMS. Our earlier coverage of the Android SMS of Death bug shows how much still depends on text messages.

Stronger account locks are easy to set up. WhatsApp, for example, now supports alphanumeric two-step passwords, and Google offers passkeys and its Authenticator app under the 2-Step Verification section of your account’s Security page.

If you are cleaning up accounts anyway, it is also a good moment to review where your passwords live. Google recently added secure password manager transfers on Android, which makes moving to a different manager simpler.