At the I / 0 2022 conference this morning, Google released a series of pixel phones and the most important new system Android 13. Many new functions have been added, one of which is earthquake warning, but domestic mobile phone users are not new.

According to Google’s explanation, the built-in earthquake warning function of Android 13 operates in two parts. The first is the mobile phone. At present, smart phones have built-in accelerometers. By detecting this change, we can determine whether there is an earthquake.

If the mobile phone detects that an earthquake is happening, it will send a signal to Google’s earthquake detection service and report the possible location. Then the server will synthesize various information to judge whether the earthquake has occurred, how large the magnitude is and where it happened. Finally, it will send an alarm, and even call 911.

Although this is a new function in Android 13, for domestic mobile phone users, earthquake alarm is not a new function. Xiaomi, Huawei and other mobile phones have built-in earthquake early warning services. The principle of Xiaomi mobile phone earthquake early warning is to quickly send an early warning alarm of a few seconds to dozens of seconds to the affected area after an earthquake by using the principle that radio waves propagate faster than seismic waves, so as to strive for disaster avoidance time, Reduce casualties and secondary disasters.