Union Home Minister Amit Shah, alongside Union Communications Minister Jyotiraditya Scindia, will on Saturday, 3 May 2025, formally launch a nationwide mobile-based disaster communication system designed to deliver emergency alerts faster and more effectively to citizens across India. The initiative, developed by the Department of Telecommunications (DoT) in collaboration with the National Disaster Management Authority (NDMA), marks a significant upgrade to India's early warning infrastructure.

What Is SACHET and How It Works

At the heart of the system is the Integrated Alert System SACHET, developed by the Centre for Development of Telematics (C-DOT) and now operationalised across all 36 States and Union Territories. The platform delivers geo-targeted SMS alerts to mobile users and follows the Common Alerting Protocol recommended by the International Telecommunication Union (ITU). Since its rollout, the system has already disseminated more than 134 billion SMS alerts in over 19 Indian languages, covering natural disasters, extreme weather events, and cyclonic warnings.

Cell Broadcast Technology: The Key Addition

To further strengthen the speed and reach of alerts during critical events such as earthquakes, tsunamis, lightning strikes, flash floods, and industrial hazards, the government has introduced Cell Broadcast (CB) technology alongside the existing SMS-based framework. Unlike conventional messaging, CB technology enables the simultaneous transmission of alerts to all mobile devices within a defined geographic area, ensuring near-instant delivery even during periods of severe network congestion — a critical advantage when communication infrastructure is under stress during disasters.

Officials stated that the integration of SMS and Cell Broadcast systems will make India's emergency response communication framework more robust, real-time, and accessible during crisis situations. This is a notable structural improvement over the earlier system, which relied solely on SMS delivery and was vulnerable to delays during high-traffic periods.

Nationwide Testing Exercise

As part of the formal rollout, a nationwide testing exercise will be conducted during which mobile users in capital cities, including Delhi-NCR, may receive test messages in English, Hindi, and regional languages. The Ministry has clarified that these are test alerts only, and no action is required from the public. Citizens have been urged not to panic upon receiving such messages.

Why This Matters for Disaster Preparedness

The scale of SACHET's existing usage — over 134 billion alerts across 19 languages — underscores the growing reliance on technology-driven early warning systems in a country highly exposed to natural disasters. India ranks among the world's most disaster-prone nations, facing annual threats from cyclones along its coastline, flash floods in the Himalayan belt, and seismic activity across multiple zones. This comes amid a broader global push to standardise emergency communication protocols, with the ITU's Common Alerting Protocol now adopted by several major economies. The addition of Cell Broadcast capability aligns India with countries such as Japan, South Korea, and the United States, which have long used similar mass-notification technologies. With both ministers present at the launch, the rollout signals strong political prioritisation of disaster preparedness infrastructure ahead of the monsoon season.