GoKawiilGoogle links users' phone numbers across all Android device accounts without warning
Google has been automatically attaching a verified phone number to every Google account signed into the same Android device since a September 2025 Play services update, without notifying users first. The behavior came to light only recently as users noticed it, and it ties together accounts a person may have intended to keep separate, such as work and personal profiles.
GoKawiil's interpretation of the reporting above, not reported fact.
Android Authority suggests Google's likely intent is to strengthen account recovery and anti-abuse protections, but doing so without consent removes users' ability to keep identities compartmentalized. This could create a single point of failure, since a hijacked phone number via SIM-swapping might expose multiple linked accounts rather than just one, and raises broader questions about consent in security features rolled out by default.
- Google has linked phone numbers across accounts on the same Android device since September 2025, without prior notice.
- The feature compromises separation between personal, work, or sensitive accounts tied to one real-world identity.
- A compromised phone number could expose multiple accounts at once, especially via SIM-swapping attacks.
Source: androidauthority.com, 2026-11-03
Published there as: “Google is silently linking phone numbers across accounts — the privacy risks and how to stop them”
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