Android Earthquake Alert System: Performance and Methods

• Android smartphones use acceleration sensors to provide early earthquake warnings.

• Between 2021 and 2024, thousands of successful warnings were sent to people in quake-prone regions in 98 countries.

• Google and the University of California Berkeley’s Seismology Laboratory released data on the Android Earthquake Alert (AEA) system’s performance.

• The system was first launched in the U.S. in 2020, followed by New Zealand and Greece in 2021.

• The system issued alerts for 11,231 events, including Turkey-Syria, Philippines, Nepal, and Turkey’s 6.2-magnitude event in April 2025.

• The system has detected over 18,000 quakes, including over 2,000 strong ones, and issued 79 crore alerts.