India to Launch Mobile-Based Disaster Alert System with Real-Time Cell Broadcast Technology

At the core of this initiative is the Integrated Alert System, known as SACHET, developed by the Centre for Development of Telematics (C-DOT), the government’s premier telecom R&D institution.

In a major step towards strengthening India's disaster preparedness and public safety infrastructure, Union Home Minister Amit Shah will officially launch a next-generation mobile-based disaster communication system on May 2, 2026. The launch, to be held in the presence of Union Communications Minister Jyotiraditya Scindia, marks a significant advancement in the country's ability to deliver real-time emergency alerts to citizens.

Developed by the Department of Telecommunications (DoT) in collaboration with the National Disaster Management Authority (NDMA), the system integrates cutting-edge technologies to ensure rapid, reliable, and geo-targeted dissemination of critical information during emergencies.

SACHET System: Backbone of India's Disaster Alert Network

At the core of this initiative is the Integrated Alert System, known as SACHET, developed by the Centre for Development of Telematics (C-DOT), the government's premier telecom R&D institution.

The system operates on the globally recognized Common Alerting Protocol (CAP), recommended by the International Telecommunication Union (ITU), ensuring interoperability, standardisation, and global best practices in emergency communication.

SACHET is already fully operational across all 36 States and Union Territories, delivering alerts via SMS directly to mobile users in geo-targeted zones. It has proven its effectiveness during cyclones, floods, extreme weather events, and other emergencies.

134 Billion Alerts: Massive Scale and Reach

The scale of the system's deployment underscores its impact. To date, disaster management authorities have used SACHET to send over 134 billion SMS alerts in more than 19 Indian languages.

This multilingual, large-scale communication capability has been instrumental in:

• Issuing early warnings during cyclones and severe weather events

• Alerting citizens about floods, lightning, and heatwaves

• Enhancing disaster response coordination at local and national levels

Officials say this widespread reach has played a crucial role in saving lives and reducing disaster-related risks.

Next Leap: Cell Broadcast for Instant, Real-Time Alerts

Building on the success of SMS-based alerts, the government is now introducing Cell Broadcast (CB) technology—a major upgrade designed for time-critical emergencies where every second matters.

Unlike SMS, which is delivered individually to mobile users, Cell Broadcast technology enables authorities to send alerts simultaneously to all mobile devices within a defined geographic area.

Key advantages of Cell Broadcast include:

• Near real-time delivery of alerts

• No network congestion issues during emergencies

• Ability to reach millions of users instantly

• No requirement for prior registration or app installation

This makes it particularly effective for sudden disasters such as:

• Earthquakes

• Tsunamis

• Lightning strikes

• Industrial accidents like gas leaks or chemical hazards

C-DOT has been entrusted with the indigenous development and deployment of this system, reinforcing India's push for self-reliance in critical digital infrastructure.

Nationwide Test Exercise in Major Cities

As part of the launch, a nationwide test will be conducted across all capital cities, including Delhi and the National Capital Region (NCR).

Citizens in these areas will receive a test alert message on their mobile phones in English, Hindi, and regional languages. The message will 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."

Authorities have clarified that this is only a system test and does not require any action from the public.

Strengthening India's Disaster Resilience Framework

The launch of this advanced communication system represents a critical milestone in India's disaster management strategy, aligning with global best practices and leveraging digital innovation to enhance public safety.

By combining the proven reach of SMS alerts with the speed and efficiency of Cell Broadcast technology, India is building a robust, multi-layered emergency communication framework capable of responding to both natural and man-made disasters.

As climate-related risks and urban vulnerabilities increase, officials say such systems will play a vital role in ensuring that timely, accurate, and actionable information reaches citizens—ultimately saving lives and strengthening national resilience.