Millions of mobile phone users across India received a loud, unexpected emergency alert on Saturday afternoon. The message read “Extremely Severe Alert” and caused widespread confusion. The government moved quickly to clarify: there was no emergency. It was a test.
The Department of Telecommunications (DoT), working with the National Disaster Management Authority (NDMA) and the Ministry of Home Affairs, conducted a nationwide trial of India’s new Cell Broadcast Alert System. The system was formally launched by Union Communications Minister Jyotiraditya Scindia, with the initiative guided by Union Home Minister Amit Shah.
The test message read: “India launches Cell Broadcast using indigenous technology for instant disaster alerting service for its citizens. Alert citizens, safe nation. No action is required by the public upon receipt of this message. This is a test message. Government of India.” A Hindi version accompanied it on screen.
Government Urges Public Not to Panic
The DoT asked citizens to stay calm. “If you receive an alert message on your phone, do not panic,” the department said in a public statement. “This is part of testing the Emergency Alert System so that accurate information can be delivered on time during disasters. During testing, this message may appear repeatedly. Ignore it; you do not need to do anything.”
At the centre of the new system is SACHET, an integrated alert platform developed by the Centre for Development of Telematics (C-DOT) and built on the international Common Alerting Protocol. The system is now active across all 36 states and Union Territories.
Unlike standard SMS messages, Cell Broadcast alerts reach every mobile handset within a defined geographic area simultaneously, without requiring internet access or a mobile app. When triggered, the alert overrides phone settings — including silent and do-not-disturb modes — producing a sharp alarm sound and a prominent on-screen message. This ensures people receive warnings even when they are not actively using their devices.
The technology is designed for use during natural disasters such as earthquakes, tsunamis, and lightning strikes, as well as man-made crises including gas leaks and chemical hazards. The government says that once fully operational, the system will reach affected citizens within seconds of an emergency being declared.
What It Will Be Used For
This is not the first such test. A similar nationwide trial was conducted in February, when iPhone and Android users both reported receiving a “Test Cell Broadcast message” from the NDMA alongside a loud beep.
Users who do not wish to receive test alerts can adjust their settings by navigating to Settings, then Safety and Emergency, then Wireless Emergency Alerts, then Test Alerts.
No action is required from the public. The beep on your phone on Saturday was the government making sure it can reach you when it truly matters.
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