In a study published in the journal Science, Google unveiled its groundbreaking utilization of over 2 billion smartphones equipped with motion sensors worldwide to establish an earthquake early warning network. This network leverages specialized algorithms to analyze accelerometer data from seismic waves, particularly when phones are stationary. To date, it has detected over 11,000 earthquakes and issued alerts for quakes measuring 4.5 on the Richter scale and above to users in 98 countries. While occasionally rivaling traditional earthquake warning systems in performance, Google emphasizes that this network serves as a supplementary service and does not aim to replace official earthquake monitoring or warning systems. This innovative application of smartphone technology offers invaluable assistance to individuals residing in areas devoid of traditional earthquake monitoring networks.