Google launches fake call detection for Android users

Google has launched a fake call detection feature for Android that warns users about suspected spoofed calls from contacts.

The feature is rolling out through Phone by Google on devices running Android 12 and later, starting with Pixel handsets.

It targets a growing form of fraud in which scammers combine caller ID spoofing with AI-generated voice cloning to impersonate family members, employers, or authority figures. Those tactics have made it harder for people to trust that a familiar name and number on screen match the caller on the line.

The tool works when both people on a call use Phone by Google. In those cases, the caller's device sends a silent verification signal during the call to confirm that it is the source of the call.

If that signal is missing, the receiving device checks with the contact's actual handset. If the device indicates that no call is being made, the user sees an on-screen warning advising them to hang up.

Scam pressure

Impersonation scams remain among the most commonly reported forms of fraud. Google cited global losses of USD $2.95 billion in 2024 as criminals increasingly use internet-based calling tools to mimic trusted numbers and consumer AI tools to reproduce a known voice.

Google described the feature as an industry first. The system relies on Rich Communication Services, or RCS, and uses end-to-end encryption for the verification process.

That approach means the technology could spread beyond Google's own software. Because the feature is based on the open RCS standard, other device makers and app developers can implement the same type of verification.

The launch adds to a broader push by large technology groups to curb digital scams across messaging, email, mobile software, and advertising. Mobile devices have become a key battleground as fraudsters shift from mass text campaigns to more targeted attempts using synthetic media and spoofed identities.

Phone by Google is already the default calling app on most Android devices, according to Google. Users whose phones rely on another calling app can install Phone by Google and set it as the default to access the new warning system.

Broader defences

Google linked the release to a broader set of anti-fraud tools across its products. In messaging, it uses AI-based scam detection in Google Messages to identify malicious texts. In calling, some Pixel and Samsung users can already enable scam detection that flags suspicious live calls using on-device machine learning.

Elsewhere, Gmail supports sender verification through Brand Indicators for Message Identification, while Android Enhanced Play Protection blocks some sideloaded apps that seek permissions often linked to financial fraud, such as access to one-time passwords or screen content. Google also requires verification for financial services advertisers seeking to run ads tied to regulated products.

The latest move reflects how consumer technology companies are responding to a rise in deepfake-enabled fraud that exploits personal trust as much as technical weaknesses. By checking whether a call is genuinely coming from a known contact's device, Google is trying to restore one of the simplest assumptions in mobile communications: that a familiar caller really is who they appear to be.

Fake call detection is on by default and works automatically in the background when the conditions are met.