April 8, 2026

WhatsApp users can now determine who has stored their phone number in their contacts by utilizing the app’s broadcast function, according to verified reports.

How the Broadcast Feature Works

The broadcast function, a long-standing feature of WhatsApp, allows users to send a single message to multiple contacts simultaneously without creating a group chat. By leveraging this tool, individuals can identify which contacts have their phone number saved in their address books.

When a broadcast message is sent, recipients who have the sender’s number saved in their contacts will receive the message directly. Those who haven’t saved the number will not see the broadcast, providing a clear indication of who has stored the sender’s details. This method offers a discreet way to check without alerting the recipients to the sender’s intent.

Privacy and Practical Implications

The discovery of this method has sparked discussions about privacy and the unintended uses of WhatsApp’s features. While the broadcast function was designed for efficient communication, its secondary use as a tool to track saved contacts raises questions about user awareness and control over their digital footprints.