Google has rolled out a new security feature for Android that detects when a caller may be impersonating someone in your contacts, including using AI-cloned voices, and warns you before you get tricked.
The feature, called Fake Call Detection, is part of the June 2026 Android Drop and is now rolling out globally starting with Pixel devices. It works through the Phone by Google app and requires both the caller and recipient to be on Android with Google Messages and Google Contacts installed.
For Android users in the Philippines, this is a welcome development. Phone scams in the Philippines have long exploited spoofed numbers – callers pretending to be banks, government agencies like SSS or PhilHealth, or even family members asking for emergency money. INTERPOL’s March 2026 Global Financial Fraud Threat Assessment cited impersonation fraud as one of the leading contributors to over $400 billion in global losses worldwide. In the Philippines, where most people use Android phones and GCash transfers are instantaneous, a convincing fake call can drain a wallet in minutes. This feature won’t stop every scam, but it adds a real checkpoint for calls from people you already know.
How it works
The system runs as a silent background check every time a contact calls you. When a contact calls you and you’re both using Phone by Google, their device sends a silent confirmation signal in real time to your device to verify the call is legitimate and truly coming from the contact’s device. This digital handshake uses end-to-end encrypted Rich Communication Services (RCS) technology.
If something is off – say, a scammer has spoofed your mother’s number and cloned her voice using an AI tool – your phone will notice that the initial confirmation signal will be missing and ping the contact’s real device to double-check. If their real device says, “I’m not making a call right now,” you’ll get a warning on your screen advising you to hang up immediately.
The alert says, “This may not be [Name]” and gives you the option to immediately hang up.
The reason Google built this on RCS rather than relying on carrier-level call authentication is portability. Unlike call authentication protocols like STIR/SHAKEN that operate on a network level and require carrier support, Google’s new system is much simpler to implement widely and operates more person-to-person. That means it doesn’t need Globe, Smart, or DITO to do anything on their end; it works as long as both users are running the right Google apps.
Why AI makes this harder
The threat this feature targets isn’t new, but it has gotten significantly harder to spot. Scammers spoof the phone number, routing calls through internet-based software to make it appear as though the call is originating from a familiar contact, then use easily accessible AI deepfake technology to sound exactly like an authority figure, family member, or employer. Experts say AI audio deepfakes have become so realistic that most people can no longer reliably distinguish them from real human voices.
Google framed the feature as an industry first. Fake call detection represents the next major step in our industry-leading protections against scams. “As scammers grow more sophisticated, we are continuing to expand and evolve our protections,” according to the official Google Security blog post authored by product managers Eric Lynch and Oren Schetrit alongside technical program manager Troy Kensinger.
Availability and requirements
Fake call detection is rolling out globally in Phone by Google to Android 12+ devices this month, starting with Pixel devices. Phone by Google, Contacts, and Google Messages must all be installed, and RCS capability in Google Messages is required. Both the contact and the call recipient must use Phone by Google.
The feature is on by default but can be turned off at any time in the Phone by Google settings. Google says it plans to extend support to other Android 12 and later handsets beyond Pixel. Because it’s built on RCS – an open standard – it’s also possible for other apps and device manufacturers to adopt this technology.
For Android users in the Philippines who aren’t on a Pixel device, the rollout to broader Android 12+ handsets from Samsung, OPPO, and other brands is expected in the coming weeks. Google has not confirmed a separate Philippine release timeline beyond the global rollout announcement.
