Android Earthquake Alert: 2.5 Billion Users Warned of Quakes with Phone Sensors

July 18, 2025
Android Earthquake Alert: 2.5 Billion Users Warned of Quakes with Phone Sensors
  • In a 2023 event in the Philippines, users received alerts about six seconds after seismic detection, providing up to 15 seconds of warning before shaking.

  • Currently, AEA is available in 98 countries, reaching approximately 2.5 billion people and sending around 60 alerts each month, showcasing the potential of smartphone-based disaster response.

  • The system distinguishes real earthquakes from other vibrations by analyzing motion patterns across multiple phones in the same area.

  • Alerts are categorized into two levels: 'be aware' for those farther from the epicenter and 'take action' for those closer, with distinct sounds and messages, even during do-not-disturb modes.

  • Android Earthquake Alert (AEA) is a system that uses the accelerometers in Android phones to provide early warnings for earthquakes, giving users up to two minutes to reach safety.

  • Google's AEA model predicts earthquake location and strength by analyzing accelerometer data and seismic wave patterns from smartphones.

  • Since its launch, the system has only had three false positives, mainly caused by non-seismic vibrations like thunderstorms, leading to ongoing improvements.

  • As of March 2024, AEA has issued over 1,200 alerts for earthquakes ranging from magnitude 1.9 to 7.8, with accuracy enhanced through software updates.

  • Launched in the U.S. in 2020 and expanded internationally, AEA is enabled by default on most Android devices, ensuring widespread earthquake monitoring.

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How Android phones became an earthquake warning system

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