The Android Earthquake Alerts System uses the sensors in Android phones to detect earthquakes. The Android Earthquake Alerts System uses the sensors in Android phones (that is, nearly every phone that's not an Apple iPhone) to detect quakes. If there is a possible quake, then "near-instant" alerts are sent to all Android phone users in the immediate area. Google's Android Earthquake Alerts System, which is now being trialled outside the US. "It doesn't include everyone, not everyone owns an Android phone, for example.

Source: Otago Daily Times April 28, 2021 20:03 UTC