Google is rolling out a new scam-detection feature for its Phone app that alerts users when callers impersonate their contacts. The feature uses RCS technology to verify whether calls originate from actual Android smartphones.
Google's updated Phone app will now flag suspicious calls that appear to come from saved contacts but originate from fraudulent numbers. When a scammer impersonates a known contact, the app displays a warning, allowing users to hang up before engagement.
The feature leverages RCS (Rich Communication Services) and is available on Android 12 and later. Google Dialer sends a silent confirmation signal to verify the caller's identity, checking whether the call originates from an actual Android smartphone.
The timing of this rollout reflects growing concerns about AI-powered scams. The FBI reported that Americans lost over $893 million to AI-based scams in 2025, marking impersonation fraud as an increasingly prevalent threat.
Impersonation scams typically work by mimicking a trusted contact's phone number or voice, exploiting users' natural trust in established relationships. Victims may be tricked into sharing sensitive information, authorizing payments, or downloading malicious software.
Google's approach combines caller verification with user notification, creating a two-layer defense. The silent confirmation signal operates in the background, requiring no action from the recipient while providing real-time protection.
The feature represents Google's broader push to integrate security measures into core Android applications. By embedding anti-scam technology into the default dialer, the company aims to reach users who may not install dedicated security apps.
Android users on version 12 or later will receive this update automatically. Google has not announced rollout timelines for other platforms or details about international availability.
The announcement underscores how AI tools have shifted security threats from technical exploits to social engineering. As voice synthesis and number spoofing become increasingly accessible, verification systems built into calling infrastructure offer practical defense mechanisms for mainstream users.
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